{
  "manageEntity": {
    "action": "Save",
    "entityId": "722860845",
    "entityType": "Track",
    "nonce": "0x7a5a6ea3d82558287f0b4ce2f938177cf73f8f08a5b32755dbd4e912993864bc",
    "signature": "0x0bd2e02e7a844a9cc6ce705fef7f77cb0ec6d56c154c07f6198d5a5f681cb538374f2af50685b1694cd94d3cebe25b99a58e9dbf67e0fc0509867a2968011a351c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}