{
  "manageEntity": {
    "action": "Update",
    "entityId": "550557206",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera76vhajk4yejimy6wek2ptq3txui6h7veajokdrhsvo5mx6wg444q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1434692857},{\"type\":\"playlist\",\"playlist_id\":1459844573},{\"type\":\"playlist\",\"playlist_id\":433461322},{\"type\":\"playlist\",\"playlist_id\":1862928833},{\"type\":\"playlist\",\"playlist_id\":338076579},{\"type\":\"playlist\",\"playlist_id\":2042999254},{\"type\":\"playlist\",\"playlist_id\":1167027634},{\"type\":\"playlist\",\"playlist_id\":2109778367},{\"type\":\"playlist\",\"playlist_id\":1578472398}]}}}",
    "nonce": "0x6fd0a4f99618a59f4a242109f24d8ac9d2af380bdfbd36e579d9f0c57f99bbe4",
    "signature": "0x7236107fb8ccf19e69751b0bced1421800d150e83bbb8b0410a7f2c77e9cbc6866841e36b58d39c4ad3c64c31acdbd35e7410631032a177e4344b3eeeb1bb98d1c",
    "signer": "0xE837e052F61622F70fAE29E877A7adAA6b3039c8",
    "userId": "550557206"
  }
}