{
  "manageEntity": {
    "action": "Save",
    "entityId": "2116679177",
    "entityType": "Track",
    "nonce": "0x419acc3391e9656895cfbb2bdb3dbc3ff23dda53b3153af9e09d1cbcbc961482",
    "signature": "0x6d73d598ee3ef6694af5a13215b7d8c7f761e9abe487d0728d01d21a558689ba063b62a26c1ac76b7710908516d8bcfa6f43a6938bd117fc3fca7036df2f50c31c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}