{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108339",
    "entityType": "User",
    "nonce": "0xddff181ddb3884a4f3c8c978d27644b8e46aa618a4b14537c056edd6c6159172",
    "signature": "0x971c49ff5decf6dc1a442c00b0d1e3135a81ffbe784d52bff32b4155fd94d55929daf33569ae82c825cb177cf35750f5ec6aa75403e1392373bf7a5835e3e5611b",
    "signer": "0x2d4E313C5C5BBeCd31f664627b0a91361e5D04D1",
    "userId": "106406"
  }
}