{
  "manageEntity": {
    "action": "Update",
    "entityId": "983568397",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajy27yfb5sdgfwsj3pnxfhdwzdgjqfw3gripztabbcps43mcxk3yq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1674688749},{\"type\":\"playlist\",\"playlist_id\":1323603582},{\"type\":\"playlist\",\"playlist_id\":750333898}]}}}",
    "nonce": "0xd614000f4426915d348d508e65e48e3c709dff3836f6ddc3ac0686f0dabf3225",
    "signature": "0x9216a0c86ed6928b73dddd0dec45b4e57c94a2a1d5bf89f76a4370a02bdf95046b6c3faaec132d3367514aae9083eab8c3f3c5ffb6076985377f5335aaf5603f1b",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}