{
  "manageEntity": {
    "action": "Save",
    "entityId": "1076086983",
    "entityType": "Track",
    "nonce": "0x3ce120dc3d824c8bef96333f50498ed8861c98398d006260ced4468e8753ae0b",
    "signature": "0x28c21404ade544d0608e7abaf95feff27610a0e8608058153174e2cf5fcc109260ef6f2bfd36b0003d552218bb1062492b94d0cc8d176409b12af0062504f30e1c",
    "signer": "0x3FaF69001C3D47D6De60585DA3B6dd3E0ECEC260",
    "userId": "230914927"
  }
}