{
  "manageEntity": {
    "action": "Update",
    "entityId": "370091516",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x276ccb7c5d91a25f149188023d849f13ab26605f91b200d0d982aa185be6c911",
    "signature": "0xe36a6aa04bf98d0fe988cc36340547e4a3959bf7f8e1c3f391a9a2a111c081da1934120740736a5125dfd30b3590d35f4ca40ad3f16cf4f3ec39ac9a66644bf21b",
    "signer": "0x15B9643abE09bd37C52a5BD1dCF938B05b06cBFB",
    "userId": "370091516"
  }
}