{
  "manageEntity": {
    "action": "Save",
    "entityId": "1929065587",
    "entityType": "Track",
    "nonce": "0x10cb163e090ecbfd364a1111c174cf527f0ddd153efda0e777618287f421f547",
    "signature": "0xf3695e3651e09d1bb57954c5337bea1176773af9b0677866f5ef4d8d0d2afa5106a7d9854f944291cb9f3f816a628e1d2a83b3b03df32623630ac0d9074873d01b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}