{
  "manageEntity": {
    "action": "Save",
    "entityId": "169079",
    "entityType": "Track",
    "nonce": "0xdd1b991721b7882317319f5d566dd9caef88a3376335919e0619484eb183f009",
    "signature": "0xad489012847013c31ef8b31759c3d4d3abcb82f40304ebea73c6cacfa11dcb947b7ad081b337f8ba7905a9f89600218764a873ddaa956b14e6a37c8a73c1b57e1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}