{
  "manageEntity": {
    "action": "Save",
    "entityId": "1104823642",
    "entityType": "Track",
    "nonce": "0xb7fdd44ece6d12c82f23b8d643e728ba7f3cb0b5340d920c29b9da86a6a3f88e",
    "signature": "0xf719ca7241b818c38f3b5e713c93b1123e65bf267b08bf95671a0bd4ec10ae6b6b18c3980e41c29336c481bf542c25a90fcbf9c111b2989a38e34ab714c2ded01c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}