{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5642",
    "entityType": "User",
    "nonce": "0x212b27951f0ba28b656dbc951ddce0023b541ab9ff39af5d97f8e33c67126720",
    "signature": "0x28b5bc32e8a02149473e590e134e51ac27e78309a52fec257320f0dece5d1f2c733054b0bc54c0732e09e73e4990c945f887d0c30c6c936dafe3928e40f394791c",
    "signer": "0xc3E1A1F6d24cB1f128e405594711717CaaA95FB2",
    "userId": "494935131"
  }
}