{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "399822794",
    "entityType": "User",
    "nonce": "0xa025858d91e6385de46be5f68365f2464454f6872859b2c639e9199bcf301bd6",
    "signature": "0xd95b081e8bbf223c3f33dc489d63bfe209ed0c6fb87ed5b463773087c88757dd62a8de4bcd35b1d72e522b1dd5de7b5db515f967c307640fa36a4a8372da63e51b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}