{
  "manageEntity": {
    "action": "Update",
    "entityId": "452933192",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdf6a5e768dc83af4901dee6d5accff56718e89aede560bcc0ceb3c4f02ac7054",
    "signature": "0xd1802bb0e82749615fc4b3545fedfa12e77b42bcf87bd5be52b996168eef5fb213cc9dbc5dfb95e1bd0f1fd55d215701a6b59761e8706aaec55e484c6d2511071c",
    "signer": "0x2565764634Da5c106B218e12c0cEa5b03766b121",
    "userId": "452933192"
  }
}