{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838752772",
    "entityType": "User",
    "nonce": "0xb7a93ff896f937b08a13a0470b2e954d5b9b902ac558bec1bec2772e2eb62df3",
    "signature": "0x1e5a55f074d7c65c1b7ba630115cdfe3877ae9af966a29f5637ba9c4f31fb85849654142b703245de75c68537951b183e3394eb62b2a2f5ab1e55c1a6c99f07c1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}