{
  "manageEntity": {
    "action": "Save",
    "entityId": "95454",
    "entityType": "Track",
    "nonce": "0x0d1f3f891e576499e49f4d03959a870c2a7040e64fca9d533b5f4ea3c207edab",
    "signature": "0x15400edc8c549ec0c50495a34342793f5c50c118f4dbf1ae65c00bbc43587ff06915be1f3189570ac439c3ad9cdfe53ee8e6b56355d844223e877e6cbc0010e51c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}