{
  "manageEntity": {
    "action": "Save",
    "entityId": "366368745",
    "entityType": "Track",
    "nonce": "0x8ff512cf5694e4322ce937e7ed63c3c257ad824e9c9ae391d734609e053255a2",
    "signature": "0x7fce507baad354523f972dbaf10b718912d06445d00b5f26f35665e532904d5270c92d01bfadd18371fe32118acfef829549e7a07938993af6bb7464e34025521c",
    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
    "userId": "849776474"
  }
}