{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x85990bef974aa0659ab3217650f9279b1234bc25c5fc656ca7e452cfc5825ab6",
    "signature": "0xe71e104fdd9ebf594f002639f780f7d4871c0a53086d8c46f8bf219dce7960981265aee17d69ac7a9305196bc33e463e7cf54f6a362e7b90cf4610ce94d8caf11b",
    "signer": "0x77C6B27E16EF85aacFc3f52e4f28B74CfB1dA4d9",
    "userId": "303550786"
  }
}