{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "395354603",
    "entityType": "User",
    "nonce": "0xb1ed9e383d9453f149fdb891840fd886b9b046803f9a2d059e9ca584fc280bc9",
    "signature": "0x553b0851345af88fcf78a50e9d1d78adcb548e785fb9a86dda015dfd16c6c8a1010c47dea600b8c677e60dd15e5918ad03df8bad2ad89c941bb796648dcef43e1b",
    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}