{
  "manageEntity": {
    "action": "Save",
    "entityId": "1190146876",
    "entityType": "Track",
    "nonce": "0x8ba2a6046a99909eeec57ecdadade6abdf6e72ec056aa9383b82bdaa79d6cca3",
    "signature": "0xc8d153182bf90d132cfb9f93328b70e7a9d821a0261c24ab6378e68d668e5f79584857ebe541f04345be7dccb1eb40b98809c41f7505f2f80fa95b9030cedb621c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}