{
  "manageEntity": {
    "action": "Save",
    "entityId": "1867332515",
    "entityType": "Track",
    "nonce": "0xf42b04a84eb9c79a54ed882bf816dca8d06e11a76b9dcc852a6359c287d4f0b7",
    "signature": "0x5eff4801b6ede575f46d5249a8470eeff63bdd596b8de5de972f78a15440d89f3b29ef565d6d6afbdb35499af35d95257c97683da5bd32a47555c03ec842d68e1b",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}