{
  "manageEntity": {
    "action": "Save",
    "entityId": "1044747302",
    "entityType": "Track",
    "nonce": "1789714695499524233",
    "signature": "0xa7e2eb413c5b4b0cbf84573ae97a78be247185f4010157bcccb82255cfb1cfcb45996bdfbf94a6dc2d737850b9aa38b8b5060b7aa31fb284b467a3a8a03ef3121b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}