{
  "manageEntity": {
    "action": "Save",
    "entityId": "1809076410",
    "entityType": "Track",
    "nonce": "0xb1f47848109996cbd789e6d100ec4e2964b3900b99f7e0b72f5d12481a6f2ee4",
    "signature": "0x23135b1162b33d752782fdfa7142e198c7a7e5586e70f6aac513b4e3aae2b5f50dfb1ee3389dcdd20b1785fe3fa5bad0957585ed4993144bf54b6fc54cd057f01b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}