{
  "manageEntity": {
    "action": "Save",
    "entityId": "1179946214",
    "entityType": "Track",
    "nonce": "0x332f276a8e94a394a5f832388adbbeca85430b647c33618746281e0aa5a9d3a5",
    "signature": "0xbdc95d73dac79545f53a256d444d6e843ff2adf4fab30227c7b74e712990e29812692bb49ec1a2aa2fcc2cf1e05ec1d5202b2e95f4f17e540505fa27a97ac9151b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}