{
  "manageEntity": {
    "action": "Save",
    "entityId": "1186170177",
    "entityType": "Track",
    "nonce": "0x1a86b5fbea5e7803680c08682fe5fe276cd7b6d9c3669dbfc90dac81919d2ed7",
    "signature": "0xa5ee3f6217f446f08e2aca650dc1a503864a9f75c7e715282d4b60a4d3df2af8096225a1a323ea3b4cf4acf6b55868e42054622e0626e15bedfff6bd4b2f232a1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}