{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37800069",
    "entityType": "User",
    "nonce": "0x1d8cc3082ef23f3369accf5960c19bda22dde3757e5adc4453728e5e867be842",
    "signature": "0xf0f6cbe25149936f7026da451257479c683de7603d783cb0bb860c9f1f4ceb210c71e7d1ca3a0493984ea9266014bea858c6e4d01a24d93320734d0e1a002d2a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}