{
  "manageEntity": {
    "action": "Save",
    "entityId": "1773340349",
    "entityType": "Track",
    "nonce": "0x54a4e302b925d3bb602f913a8bd36213504b761751e10f63c63ce87b41f72ce0",
    "signature": "0x81d4dc515262262e6a5dd0696d9fa1c728ba157204a2a424453e941a967d35fc161c285ba0aecc82744600d758cc3f5089845662a94186821dc39bd8723cd5d21c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}