{
  "manageEntity": {
    "action": "Save",
    "entityId": "626739725",
    "entityType": "Track",
    "nonce": "0xefb0ca68b1211b4d116f6ee734f165f80a6a4d0fa553b230e0979d8b4b806765",
    "signature": "0x246edaeb44ca1bfe8a7bc2ca570f21baf07d835d30fe9de251374b0f01f611fa450b74c0feb0910f56b296b6261cef59dbe8dd0fe57b5dc8558d18184cc6dae01b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}