{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334323",
    "entityType": "User",
    "nonce": "0xfc4a93b0f4a02f7a5565b382c1dbf156e124edeca44d1766f11207aab51a5ed9",
    "signature": "0xfccca78d54149bbf1e93056f3cce459882e49dadb762820ae1d1882aa762553b7a40319e2ef7624dab5729606f2c05de6a2389adac7199d672e079aefe4d0afd1c",
    "signer": "0x1815853A3D3f5b8c2490bD12f96176a3a4Db22b1",
    "userId": "957405762"
  }
}