{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x02b1a51a38f144ccc632ab1c4c9946e57a4605f6204907894513df044c50f821",
    "signature": "0x15bedd731fbfacb59484c65777e0d23e71c6d7501fa52f53e3b7981f9276b9ae357c05c90b3f8ff61b5ce12bc57e674ad2528fcf6919a99c23dbb78f8c815cfa1c",
    "signer": "0x45476b43Ea7F36e200122F8cd58A0700b6b12fDF",
    "userId": "302150879"
  }
}