{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648443373",
    "entityType": "User",
    "nonce": "0x462d6c15580af0db1523f4ad921d45bab4a188ba85abfc46634388e0f62d50b3",
    "signature": "0xfb41945585abb214df36f2223602038a1167b78bae0768a2502eeabb9b579156317b1e18e0b9abefea91cf619fd1d8f5de5a9a60198fa652e5bb5835d10172cb1c",
    "signer": "0x6fb79570A836Ea8554ad1D745C12769B22f1e4E3",
    "userId": "283478"
  }
}