{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234183",
    "entityType": "User",
    "nonce": "0x25ff7c7f6b8e05301dd126372076b5359bfa42de852f656fe898f1e9f884ad0b",
    "signature": "0xf3f9dbfba43022a7d6fc177cfd6b5d55b3196965f636251cdf92995cb1df49f00b223918a1cfa96acc159242e7096b710d1e5439602ab33d8acc4a546b34b0dc1b",
    "signer": "0xda96A17BA0D35C1921a9252fC5A4e1C7865f4e35",
    "userId": "421395845"
  }
}