{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964257878",
    "entityType": "User",
    "nonce": "0x23cf54f88b4beab5b9c71c6ef127a7216419dd22f5b7dba64f429c5135a6e5ce",
    "signature": "0xc0114f3a1879ac54c3166aba317c1810023e023ddaa855ee40835fd0e0d806727645c30482d4a61ca3afe9e13bb522da50aa1d22558fe139c2b30ac972fda0f31c",
    "signer": "0x4a4E686a6442e2Fc2495a7d4363B25c583Ea3c3a",
    "userId": "34815"
  }
}