{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254887193",
    "entityType": "User",
    "nonce": "0x7322f83bbdb30cba8435b4e16ad9399964a05eeaeefcef6f4579498a7120be1a",
    "signature": "0x17c03974875646210e4c14ed87f44d9b5370cb7beab0535ca5cb922f03f021743ee2afef0c6340582d3a5c8e5c3db3674da507790a302d64370874fd7c6222111c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}