{
  "manageEntity": {
    "action": "Save",
    "entityId": "1193771634",
    "entityType": "Track",
    "nonce": "0xab46886aa7a6961bacfbca0d105fea597274f6161f58f44b0c555f2897d755fe",
    "signature": "0x826d5ebf64d88ee8bcf0a2db96c72107c7974f10d6ead34416b9b51bf96a59c643d6d72705fe4775f1c58a00bff994e0ddfaedf8f0bf395e5c03adf4477652df1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}