{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904709618",
    "entityType": "User",
    "nonce": "0x565ab02b4f33e8c4565781f3c13c462f89e552d83694d2d45c683d2a07c61daa",
    "signature": "0xfdd1918500a1d9c3329db741968d0895e515465e11c2d37f34acf2ef49b4c4786fe807bf79a1943f22029c8021bceac29f610d2be4f0e01b1775dec0037b7cec1b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}