{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "281470566",
    "entityType": "User",
    "nonce": "0x475b1d6392a3a16b260ce3d76578767554f96f16ac7700b286730a1f5fd551ec",
    "signature": "0xa81a4cb970b1b41866ada6e519ffeb3b0e42ec6a71f4c8739a673c752f08ed4f5a3167ef73ecf954b303b36496f5caf981a8025b94b82163d72b9f3e88eb50d41c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}