{
  "manageEntity": {
    "action": "Save",
    "entityId": "2013870053",
    "entityType": "Track",
    "nonce": "0x5a0136d134e0e4ce54c0c3e7e1549e6304f0118da61a5246ee39955f02acd4f9",
    "signature": "0xbd3cee0e5087a0737b0f26df26af6ce5f130dd3f80ff1e6978f724426d9f9155535a8aff8453b004c24c92d8826620b4ba0abbdda1888234e21519b97d1da4551b",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}