{
  "manageEntity": {
    "action": "Save",
    "entityId": "1525863235",
    "entityType": "Track",
    "nonce": "0x701ab14a5985593cc9b87dc5f376723cb886fa45e68406044509d5fde7745fef",
    "signature": "0xc9414d3c74d6b9412ffe588bb249cba7ca73d51fb0143ee2ff5112290622465431a8a7189db9c7cf79cbe375a57e890ac697c670b7d1b29b13591fa6edcb24b71b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}