{
  "manageEntity": {
    "action": "Update",
    "entityId": "668480302",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5f04f4f9dec92b33ec4a1188e4509eda23ebf2c660c62242e5d8d1a9f02c3821",
    "signature": "0x20fcbe36372c7387a3eeac938b6db36f2f04152846eafe9c4618e51df5b420f101b0617fadc7171a314785fd152fc154290caa7f2d27e5d444764393caa731411c",
    "signer": "0x7aB0E388CdD7CfDfF61F387e68b61be6E7471492",
    "userId": "668480302"
  }
}