{
  "manageEntity": {
    "action": "Save",
    "entityId": "2075237461",
    "entityType": "Track",
    "nonce": "0xb7dd0f3d906bb86142da7d1cbe09957fd77dcab28bf64c66ef91b320b25a4b28",
    "signature": "0xac75529b4e55a472c03ee8304dd00870651807336e385ebb98c7e44d963382382ae9469bf9d12fdef8ca34f496d22aef66c98652245818af5317f4a21ce009191b",
    "signer": "0xC728d461208f32A72c509e176ED6ba54c844099F",
    "userId": "176232909"
  }
}