{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681863",
    "entityType": "User",
    "nonce": "0x9f551f8ae4aff109eb7e1b93fab1ba9957b471be99e45ae35a743cf0ad5753d2",
    "signature": "0x5c17bb652584f2060549b5bcaac0c100a86f380f5fc947036af48b5d20050b804c6614da648f0150132bfe6ec96675928cb3b10a28a09b995979cad727df25f51b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}