{
  "manageEntity": {
    "action": "Save",
    "entityId": "285468",
    "entityType": "Track",
    "nonce": "0xe7a888f8b5db7422db75c8d8c736114be284d5ead3a31bfdd1a485cc3f7a782c",
    "signature": "0x2d1dfad4c1d345edd5d4f7ae70a21ea4133889520ee9358700817c3d3e1afbb11a9d82b1ee86d1ead3211e9802de28eafc33c761a0014d2545e03f23c1d4913f1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}