{
  "manageEntity": {
    "action": "Save",
    "entityId": "1176958246",
    "entityType": "Track",
    "nonce": "0x307890607eb855abb2e1072a5d7e5d79e7c22add32f171988bd48d1bde3bbdb9",
    "signature": "0xdebfaecf02099b359e28e7138b694967c5114398d005a2b6b77e844ae465aba54aba2b4c0b4cb462fdcda31854f5a8e3b9256b93f0fd00259036a6d2b6da806f1b",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}