{
  "manageEntity": {
    "action": "Save",
    "entityId": "41732614",
    "entityType": "Track",
    "nonce": "0xf37494033e368b815feeec4a0a2343cad31b0c963f72af0faa9bb0de5fd6c4c9",
    "signature": "0xf36c47238ebc96081669aaa06680fdd3127e7b7ae539778fd14647b798c576e238829459e4b38a8016ba4107371d9fa1c9d68154d82d6015ebe86543dd4e67641b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}