{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390966",
    "entityType": "User",
    "nonce": "0xb3761432d6b7c9991466fb106629091a5b14c464f337295cfb8060cf5c585daa",
    "signature": "0xda57826befc9d7bf33caa4686c57db8aa0695e05329dc1880e75e696be52879853bfb0542795e843d29870d887407b14909bcf58f94bdbbc69349154fdb2f77a1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}