{
  "manageEntity": {
    "action": "Save",
    "entityId": "81270",
    "entityType": "Track",
    "nonce": "0xd322f14a1c9cabde091f7f2a1b6274c482b0eed2a40d31b9acd0d1e09336b1f5",
    "signature": "0xba5d9ca4777ce87aa2dc24ff68d43b510d12455509c1fb5a2fab737e98b421b8076afeb164f74b6f65eb8592fa8941ac817b0c19068c26d57400d5b70f3eaa991b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}