{
  "manageEntity": {
    "action": "Update",
    "entityId": "964263283",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdb8fb1f2c24687ac9acf5b8b680054cb99cb61b8e624fecb3f047e767b9b84af",
    "signature": "0x12f0bbdaa4c8382cc7d9beb69a49400b81c20da8162fe205915821d893499cfe5d7765f9ea33e897d89b5b91a68b1a731ec280bb28b93bfdf67c9550fe873d481c",
    "signer": "0xACCD3B03Ea2958EF485216f82C6c8B92bd703Ec1",
    "userId": "964263283"
  }
}