{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329545",
    "entityType": "User",
    "nonce": "0x2cad8b3cc2d15553a9707a3537e7b8a2f354b2a3eaeb19ff90ab3050831c97f2",
    "signature": "0xbcbea7c71f985526fb2511bd23ee91354569ab1bf972456eeb3d7e9162931b06621fe85e067afb72fdd66cb295e12a400b98673d27bb9868ec1963d0d1770f121b",
    "signer": "0x9Ebaa539cfe874f2a12f954d5f135d41C75Eac9A",
    "userId": "872121325"
  }
}