{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "751733",
    "entityType": "User",
    "nonce": "0x5d10db5f63c96d2cf837e01e6a476359530d6ddd86fe59d6f2efb2a4e7a781d2",
    "signature": "0x54b8b0dd53987ad2db3381b0005255385417df7e08039290a1fc3ac8eb9d77e04ad1208340a724371620aac5212332b1e0ab1bc0b45aab4bb9c401c42602ddc21b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}