{
  "manageEntity": {
    "action": "Save",
    "entityId": "1131805564",
    "entityType": "Track",
    "nonce": "0x6bbed2fc5d6f5feba1ae3d211c107ce41b9559880f8104c01c2f336cd61cf09d",
    "signature": "0x2e400c4a53baaa31a5841c245a208d877218b652df7f45193dc803584922ba6446a79a8b702b6e5ea732c465ef9fd183ba118bfe757b2165ecf866d8b8766cc61c",
    "signer": "0xb51B50C9b7d88C66d31539161F4BA9Dd72a17dF5",
    "userId": "465531556"
  }
}