{
  "manageEntity": {
    "action": "Save",
    "entityId": "1139244257",
    "entityType": "Track",
    "nonce": "0x657b695738713dfda2c57eac3aef1844b34e5fd4fbf14c6f7c646501e2e420c5",
    "signature": "0xef3edb64742053b9d59f41323328f20e1cda0cf2e384cc1af70b2cd600cef2d6595f8927526706301a5426ef7723ad8bdb1657360698033d06e4505e26d9f2d31c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}