{
  "manageEntity": {
    "action": "Save",
    "entityId": "1202076486",
    "entityType": "Track",
    "nonce": "0xedbc58850e261ec3cd2579800425110449b75fd267591452e6d0d74895466a34",
    "signature": "0x050378a4d2e29c1ef26c16d96ac53048eb8a0b78553b0e05de2e4e04d19ffd0413037a94d665a26e40c923b97573cfcf7167ffa4cc1328f1e4fdc15dc5e45cd11b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}