{
  "manageEntity": {
    "action": "Update",
    "entityId": "216889217",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x543a6851fbdede2b8992ca6ea59e0d2990255970c253e01d5fb54a095376c435",
    "signature": "0x12793dd352a5f0106e79ae9fc7774f81718078528cae673c3e8958627eed08e96ca8da69f1a9164ebd303cebf5872d8be15ba6ad00f008aa2c8fe7f05209f0bb1c",
    "signer": "0x2A5FAa19C84dAdAC2355a17b2c6E12Aa3c0014A7",
    "userId": "216889217"
  }
}