{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103200",
    "entityType": "User",
    "nonce": "0x6c77e5ce28155707c1b2f842f7f54c29777528981ef4a2e67dc45c70ca2f9baf",
    "signature": "0xe815fb7a8dc299f18958f94d9de079116ffea41aa2f5a713a580789869dc813951c6f38c8b497677c445ceadce711430cf52345696e42b70be6757770a3f21c31c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}