{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0xa6afa69a14806ad20f007c2071ac9268e94bd536cd427304450bbfe117641e3f",
    "signature": "0xc4b5c0a4a19774554080bb7e36f5ce9cf002df17a77e4eb7651e612a60031926729a65d452e5696b348b5801c5bd56298722785580006411d24484d0876cb5f11c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}