{
  "manageEntity": {
    "action": "Save",
    "entityId": "45881963",
    "entityType": "Track",
    "nonce": "0x18cafc305d71cdfffdfe1b515bcaef7e3ef410af1a6ce09bd99347b8c1ea5f20",
    "signature": "0x9613af372b0e1d04905465ddd106d50950557f476ca28d8fac8369413694244d1683b7852693454c5708f7d0ed36a6ce93c14371b4c6b4b70ca501c9c57b052b1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}