{
  "manageEntity": {
    "action": "Save",
    "entityId": "1629076007",
    "entityType": "Track",
    "nonce": "0x68c5149ffadf3193998dc33af9b10128097b8e999db85543a528780dba56832c",
    "signature": "0x236f9d48f6c90e68a6d98f25b0cf12202e3e0c696cd374d405f398a894f1e3574ff163ec20bb50343ba1a906aaa37f7e3541abceaf2797475092c2c00c2c3a131c",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}