{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x4735c3d8147728a7d1b230caaee2d884078859efed3fb451dd6ac32f759ce20a",
    "signature": "0x295d959ef64fe89ff4d26ed457b0297a3609ac020d1792afa15c23d5ce1a14880fc30c90886af10dfc27503791baeb43e645a9a5962a6c6b3060a63a47a5e16d1c",
    "signer": "0x5a3D8ee650e3AC49E3814789a0e2783f0bAFe395",
    "userId": "951735298"
  }
}