{
  "manageEntity": {
    "action": "Save",
    "entityId": "1008071",
    "entityType": "Track",
    "nonce": "0x7a91088449b3471874c78f0140a1e623e7352ae1703fffd4d909f4e6b6b78ed5",
    "signature": "0x551e4d0b49e52c25037783bc97f64a54b73ca139d5b14faf04f607fb492d8ad43cfedbe67660293d05df90f0a31e9a6f355317ff3dc7cf920a0848b7daf9936f1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}