{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354347",
    "entityType": "User",
    "nonce": "0xf8ca54e06fdcf08cb4a6b82773e95fd29c252e2685597ae96b000106ef134451",
    "signature": "0xe21a7abdc0c4529a6ba275e49bfc413a0e7150fd3e20e3bf91f61fd16d9fb19a13aeebdafa95c1d70d7e4546265adf6058f4d6fb418fda7d187b890d14f051cb1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}