{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0x324d3214f7ef6042f135474fcb777bd53ba2c1f3a63a2c5673d6cc3f161dd46e",
    "signature": "0xfadb6038936fa619385a7551930fa2c66807a97434cb064fbf2b7d5c2386242844e4e8cd112a9e53b4a2b2701b7b556013c420ca2a5208bb230dbba536047fc41b",
    "signer": "0x16eC1CF4f324EACfAa9D3F0D2add22A0e775fb3f",
    "userId": "392894187"
  }
}