{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x149cbf6461aa0551285433e95368c105c2e0225da40568f775c1b9c60689dd53",
    "signature": "0x9363010474014b45910707a8ac0392b50e8e6f9e65d76378b7b94c64548ceccb34c08fd9abae21dd159f5b28465812255d02ca038a427c255fb89136ab78a8291c",
    "signer": "0xe58F2D8128273F34a65a7d2cA9D026e70185D1AF",
    "userId": "391333792"
  }
}