{
  "manageEntity": {
    "action": "Save",
    "entityId": "993011426",
    "entityType": "Track",
    "nonce": "0xf2660283eda55af1c9ed8a62fa5bc1f03a6453da5d21434e8357024660eeda5a",
    "signature": "0xc03e3ee3bcc995d34a00676a5973d91d3436b0f91c6a26d736e6d2184bd6cb1d262f0674cdc4fee03d131ad09645882094c7afc065e1d2b23df6737362fbb88f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}