{
  "manageEntity": {
    "action": "Save",
    "entityId": "193283",
    "entityType": "Track",
    "nonce": "0x0253759950d4c4dd44e194c13a7e802d4c0f0251f4d09f85319f7f3d14a3431e",
    "signature": "0x619b29c2893ef6e206f85c7445d0023c793d0c4f110c8b411a78a17cf4d037cb4ff97fbf869177a23077e347a5481c8d02a7d45877c6736ff9d220fa6a5d88d51c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}