{
  "manageEntity": {
    "action": "Save",
    "entityId": "1706710145",
    "entityType": "Track",
    "nonce": "0x80ac8d240d931be34a42709610404d1116e4ae8cf35662d18137fdb3b1fb2161",
    "signature": "0x3eddd539164e9c43fa0b1aa8946e066df55a3b121ac2dda8f7de9213f43c087164050f984ccada28f1b20a3defdb5846554eab309dcfff392ab838165b548dcf1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}