{
  "manageEntity": {
    "action": "Save",
    "entityId": "962173",
    "entityType": "Track",
    "nonce": "0x3292a3ec7152c45f38fa89ff0d49ee8fdd1a1e5e147bc75a6623bb8e7af44bff",
    "signature": "0x320ea823b237339cf63a4d0d6665357afed1c4f0d0438f08d2ad844e0fb557023a23c87752b816c79233aae6d2fa302c80465ef725143e0dbe4248c30cf1399c1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}