{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "666926631",
    "entityType": "User",
    "nonce": "0x9d852d2bac8b31d21bdf08169d2e1e2680513b3a955ba98edb646dcbf205db79",
    "signature": "0xf88fbbd31176071ccd31cf3791bb08133ea95a1f7503c327da8eb4011a3452037a914501d69eaf1f731ab599a33b6f1e25a39df4a702f1d4e74b23c8a3bad2d01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}