{
  "manageEntity": {
    "action": "Save",
    "entityId": "62805767",
    "entityType": "Track",
    "nonce": "0xe92af577d59879094b29486a0d1d8d03e50417b0e1df0a34dbf0779438969a45",
    "signature": "0xc9a904b97b2e669bfdb146881ca2eb7ac900f430ec12a77ac23842c8a1109eef151a593989006eb303afd9672048e3e584ab5885c7fbd7cccc63d84e9799cbb91b",
    "signer": "0x0168976438910D2f5330323a0d0141Fb4Af95032",
    "userId": "317847"
  }
}