{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81200333",
    "entityType": "User",
    "nonce": "0xfa0821e5006777ee90910e3ac1e21a7f9e5e1a2110bb7095d43105fa35007435",
    "signature": "0x508b0d5253311d8e39fa62627c59d7ad4088557b1165487f2a6ad8f4b8ec94a91885cb4664e36a16bd84e8f56b9d07597fcd1b3702ec828b6a985ccf9ed903ff1b",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}