{
  "manageEntity": {
    "action": "Save",
    "entityId": "1052643369",
    "entityType": "Track",
    "nonce": "0xcc21387bed875a5c7d657612056030c43563c37ea37dd5e56a305115e92b33e5",
    "signature": "0x82bbee100c9c25ddfbde4c9dde0286ce2cc72fa6f1e0f0030eba64df3674362c5d892c57036f276fa2ea8bb8a0305525a35599deaf3855fec72e17e740fce0821b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}