{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1433901",
    "entityType": "User",
    "nonce": "0xdd17700c03ff62d49499a9da33ce7d27039299b90778d982810cf4df8e462dde",
    "signature": "0x591d6816c0025a70b33cbe3bfb5f236cd5e1bc465b5a29b9d7a75f02acd04e8b4cbafb98e8efe550c2c2d64a738a4ddd8a4eade5f2c0aacd43e2c48d1153a4381b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}