{
  "manageEntity": {
    "action": "Save",
    "entityId": "1213327477",
    "entityType": "Track",
    "nonce": "0xd10102c7c39b4ab987520a61589444a742459746101bf1ece978e9d77471c0ac",
    "signature": "0x051069a3578ed1f2f46f2eb10b84907cfb7f8014371384e6b9b793555cb2fc236af87464f2d82b4d246dd1a997b7a52e4c775523a6a5b7628eb60fb41bb74d531b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}