{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5327ffb9102566f1f6c86440775fa7a7cf0bab84aed05e157f75a308560cce7b",
    "signature": "0x32310ea8a2bb3a7c994d09c138e95f14b1821286a655d93328fb213d718fe7e538d1f69913324214ee0c326a6f1d803589400820796cc2c78e0483d4421a67501b",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}