{
  "manageEntity": {
    "action": "Save",
    "entityId": "2120597642",
    "entityType": "Track",
    "nonce": "0x089dd1852b220933a125c4b2a3bcb08d974f446325a759e56699cff35c89188b",
    "signature": "0x7e1cacdd13d672ba5645d7ee77b731e1ac33fa74c7b39c95313c5b3072941ba06ba01a58ab03829520aa4ccc628ef2954ca7ed0686f23c4537b0984255aacfda1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}