{
  "manageEntity": {
    "action": "Save",
    "entityId": "1805554024",
    "entityType": "Track",
    "nonce": "0xc06dcfd08d0db45540b94e2f8472bb711153b161f0c37c8b55e620e737d90c81",
    "signature": "0x25b73acb60a42d00d866687ec555868ec0ae02a9abecd511da83020f202e96292b2557c5cdbcd7c2623fb697b4ed1ffc4d808c40884669b867264b2df0a489181c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}