{
  "manageEntity": {
    "action": "Save",
    "entityId": "1670678954",
    "entityType": "Track",
    "nonce": "0x0d13ff802177c21e2f3502cdf7d51432e03f752a328ebe09f5f666a928fa61bc",
    "signature": "0xbc2c442865e24065e5f52da3dd5762d2ff87c34ff434a07efb9cb5e30b537a611016941550c44da3626d76e6237f22b7f8b39ca3791a0264dcc1b3c203fb56b31c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}