{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x521636e17902d63ff353ee3ce879fa36ec490b331ea31cbfc58b600559d8a00b",
    "signature": "0x930ed3f15ddc9917b648007a4bc34cec67a02d0ebae734229e891a40b795db691ffdc3cd497d3f3eae7ebc1554df91a7c48b5b487012588896fa4d19b39a17ac1c",
    "signer": "0x1EeF7f4505C388ca4a4B9A8fC01FcFa7c805D3c5",
    "userId": "17766667"
  }
}