{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641892598",
    "entityType": "User",
    "nonce": "0xe0b00683629b7e7f6de88f414425ec85eed09c52354dba44389b9ad1715dd4d6",
    "signature": "0x0320e1096373dd5334b31c4b0891ba868d364acc53a72c238eedaef54c6935de2315177d03af1acd072b22ab1b4f77d80a522cd124c8a07c05cd3f6cfa37d31b1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}