{
  "manageEntity": {
    "action": "Save",
    "entityId": "1147311093",
    "entityType": "Track",
    "nonce": "0x10679b51cd5fe90e2c5738e1d5bb72b5c31a8d2ce317f411a9adc7bc5c847c5d",
    "signature": "0xe7257576303887798bad0ffc503953dc1048bbd34cfb93a102d5a09986591d240289a0848bafc001530f10f3579e47caa95fa29d71b87edb30349df2b646d05a1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}