{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294860",
    "entityType": "User",
    "nonce": "0x6f1e8a30d0f1a2f858b118f42e17d1e041d642ad68ab6954cb892c553f9d5a1c",
    "signature": "0x4b4f4082d59e52580bad6d5fca5516a7c2f4a391a8f7b19493c71d7fd3ed764131ce214bdc42ce896bc7e11998a4db4aa61eb8f82104ad5ea8c2378bebb0ead91b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}