{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "777",
    "entityType": "User",
    "nonce": "0xab4e58805172f1ca26bd155b9450799637c30ad593b8b5915b26f85f18b67d89",
    "signature": "0xfea29f2357c8988966c86b7ea50c0a51956935fd3bcf41c1f4b787ca2c92d79b20ba33b82773e4185ccc3a13810de67bb2a416861722c17916da2c79f581f87e1c",
    "signer": "0x26bab874cC4C523E2E31918Fe7EBFEfEA747b506",
    "userId": "620805094"
  }
}