{
  "manageEntity": {
    "action": "Save",
    "entityId": "324141040",
    "entityType": "Track",
    "nonce": "0xaf888b38abed8da7d5f69fe0fc598d5b37284db4298951acf96389de1fb7ea87",
    "signature": "0xa12f2a34c57a848e33cb04fc2cc599db6eb6290d9bb62492f9bce48c5466ea16449a576333089c855534751704ebf612d63c0f4ad84c22a0e8055c949d7135e11b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}