{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335325508",
    "entityType": "User",
    "nonce": "0x6d4e1eb84d243b51ba9363afe8148c9ddc9e9c07c87ff2a32e529c04d733c2d7",
    "signature": "0x8adb59aa905e13b3cb14a24ed6a00367c97638e0195153217177db17e994e10042b7789beca562afc66dbf091eec67f6fdd71b47c255ff126630097aae4632cf1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}