{
  "manageEntity": {
    "action": "Update",
    "entityId": "853204284",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9dea751644393ebd6b37ece69d7f1d90ac0e6ed98de56aa9ac7f3cc36651de6c",
    "signature": "0xc7bb894971a3c8498ee84c0b98a47e4a8ac1f953f1673e15188320f1bb65fa057506af53f2abcf19931aaa416372763d21121962d8d8993beb5b22d92b5c30e31b",
    "signer": "0x1B25a911B984d84b1eEd0fc2665fc92b28eef16B",
    "userId": "853204284"
  }
}