{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x2952b47b9f5c7e05c360180fd90eb16023ead0dc22c96f4aa644fc1f3062328d",
    "signature": "0xb2f8694e098914832264a5a8261cb3e1baa54a0debcd66ebd4ed356d93c8b3f553d81e73bfb6dafffeed3c914a2e8d1a97b30d2676417afadf85ed481c551b3e1c",
    "signer": "0x8d9D00A94c3B1C9992e3CA4386AbBC6345B2E876",
    "userId": "396658415"
  }
}