{
  "manageEntity": {
    "action": "Save",
    "entityId": "92572",
    "entityType": "Track",
    "nonce": "0x8e9de5c84bf2963f330bcfc7846f627eccd337ec3f5240d4b9c45ff72ce918b8",
    "signature": "0x4322db98363a282dc11ba0a9afc0fd652d2d7330039f122d0ae76f16c250b98d00905d0b44f9186820e8241c7cfbe2d20ccd2a3dcab02bd721df247bbbd77e141c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}