{
  "manageEntity": {
    "action": "Save",
    "entityId": "962848182",
    "entityType": "Track",
    "nonce": "0x6e238e2f560c37d5b2d8753322d3317998b8795582d39bd99f1dbb52527d7e59",
    "signature": "0x4c3a0719421c0769d7de245321494d85df5f0c99b56465f567026b9f6bed97484eb8a2873ac20e94a9a62cd66c429c6f21599dd56e9952b7221f769fc91343801b",
    "signer": "0x92a5082636c97Db0Ae888484D85e4c8494A3B791",
    "userId": "895527427"
  }
}