{
  "manageEntity": {
    "action": "Save",
    "entityId": "883065677",
    "entityType": "Track",
    "nonce": "0x721a614c4dacca0eefe19b467d0f5ac48929fcce2ea71e61376eb921dfb0e55b",
    "signature": "0xa76e0abec75f5f2de89560ff6a8a6dbeaef892926424fcfb935a8bb3c105cf8173fc3de155dbc01babcc60124c27e95d66f50569e322315e74bcb7c98e6a08ea1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}