{
  "manageEntity": {
    "action": "Save",
    "entityId": "1724219141",
    "entityType": "Track",
    "nonce": "0xc9114adc6ed551bf7ab44f31a279408da93e70786574d55693611584a89e098d",
    "signature": "0xea9fb0044f96775796c7eeb80ece6edc92b5fb0b96842a9a7567dc73e1f1f9a330d8747967807bf12e7e3934ca9d38e7c98802ba2d34ff92bbbed0cfeddd3f001b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}