{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "214682964",
    "entityType": "User",
    "nonce": "0xf2a55a6b1726ba21297ba390907df7a5e665b58a13650def562ba8ed6eeddede",
    "signature": "0x66b01545125ac50b290fa7fad0a4ddf3aa2a752b2622b0e8c9a263bfcb278b550e1224baf266497e685b5b0aba7d42a77fd5949911107f654f6e7303bd8dc5e21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}