{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "336974",
    "entityType": "User",
    "nonce": "0x10b9e1df932637737c1659eab1e09667da35ce9a23406abf7d7421df0c07ef16",
    "signature": "0x795a7c45d1eaabb84d90b481d83ed36a708a00827fa1f2848e569d5d835168724376a73e731929adea4d3626f760d880e6c59cb961aa253e5cfabc756824da8e1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}