{
  "manageEntity": {
    "action": "Save",
    "entityId": "209079",
    "entityType": "Track",
    "nonce": "0x2c67561c03fc76cb35b6a0ab15aa9d39226eea4c362a60d8b630c40ca4abcc45",
    "signature": "0x18a841c1ed1121cb789c1eb82b9459efd3a0a92f63bf9ad67a364df586fce6b70aa572c0313695ff1334c26acf25491413818ceefe6d4751bfd79b8d14df1b041b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}