{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xff49422d7640364e7228c819c0ca4855107b9d75d8fee466906d8444b7fb6d34",
    "signature": "0xe2d11d1f02fb8b8d4f155dd3500e667b701c510a3e0c952ea2d26267c332389f4bb7d0453e65ea84d4b6c7af7123e85f790239775098c6e9dd88a22568803c161b",
    "signer": "0x1BF18676e3272039E0bF8f2a021954D13cC10a6F",
    "userId": "839909525"
  }
}