{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "401768119",
    "entityType": "User",
    "nonce": "0xd15da6a2412c91614a3114e99078991d15badb344fcb765d569c41eb917cca5b",
    "signature": "0x98c7cb40463121d6887b28117395043f57a998abc63de1b1d1ce9b117dd9bd8b75b5417c0956827abccb2ee4391e449a5a2a7a0abb2ea1c3d723da634bae1c7e1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}