{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x669f039387a71aaec142de0946cf175c4fd4312d46c11699c71e639f984a6faf",
    "signature": "0xeec09605d7a0bfc9667f512fe3884192591786045312b6287b63020884a7728d2b3ab0978f6a77f74342ced889f556166386e97c8f996ec27f4a45d5577c16be1b",
    "signer": "0x18106D70588e25d7Fbb05b7f449629f6fDEbC7F4",
    "userId": "645731655"
  }
}