{
  "manageEntity": {
    "action": "Save",
    "entityId": "1427015225",
    "entityType": "Track",
    "nonce": "0xc56db660e5d8e3b8a973a4a0ed9dba26bb85a0ba0f09c4bf2c73bf9444071f07",
    "signature": "0x5e6a0bdf3cfe0293ad59e2d067b24d33711eaa5b6cf567e773c05fa6ea04b0617de3cad4e0b690649f45fd35136bdc350a3bb330d4907fc72c41f3d4db93b2d41b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}