{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875378857",
    "entityType": "User",
    "nonce": "0x0808b5e20732b1a7f9537a25c6bfd6c0de1e257fd50bd0ce6a97c134fd89a4f1",
    "signature": "0xb00f1a893e52bbff60b4597e42e26ea5a10e933d637c8ce00ada98568eaa6b326aa0924a5e59eeb160708a5c5e8a2f6e864d39994c6d0a443ac5c0c57289fdfe1b",
    "signer": "0xAB601814a3b7DB1149bE0b45154295028AB51f97",
    "userId": "613793033"
  }
}