{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "52403052",
    "entityType": "User",
    "nonce": "0x11d576e896999248fb63e1984108b2a14b50ce9551dd5b5aceaab6a5cdf4bb4b",
    "signature": "0xe8ebcaea04ab22437a98c363198effd1c68343f432bbbc6625d63d9d6751825976a9a22f42467f5dcf1b38fb1026bc321f2a2588b85fc79c1e2e7b2a700748111b",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}