{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "429550",
    "entityType": "User",
    "nonce": "0x4f1f8ef79e9a9e94db90017457be94ad2952eb9e8bb7cf07febc40cc3af10d64",
    "signature": "0xb99570f1590bf077cf5ce5c4e175f090853f2a088e2e77c6190f94cf1bce8a4d04dc5a8dd254c411982abe9a32c7164ae3191444b9956ab286bfeee2a52c5be41b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}