{
  "manageEntity": {
    "action": "Update",
    "entityId": "422965736",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x71f70d62451ae57bd8fe24226bd718660dc747be346f1659a69021606ea79d6b",
    "signature": "0x685281f5cf7f3b86db2682ca4d64798985e62d2cf4bccb5798f70c8e95379b9d75d450091cebd2b20a16a717194a55ceb0cf1737dab751a1c5ee6f532cfce9a31c",
    "signer": "0x205678e73475844a14D03Ad17675d0dF5C2cD524",
    "userId": "422965736"
  }
}