{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "201770",
    "entityType": "User",
    "nonce": "0x8dde0ab07691d73966dfb2b2fdc41f8992d6b2268fd5c669fcdd0e2ecd0cc2c2",
    "signature": "0x75943b33358d98b7167b3379b7f48bf1cefa6f582836de94dd500c086c8ec9a32d55bee6bd326752f9e00e5b30b29d46c98737ebaffbe124a5b294c0ab5dd0581b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}