{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x52ccc137aea8eac7aff1c8958d3c4f11a3c66e2eb034fa429119287b17f20957",
    "signature": "0x419d93093de5ca0cd6958259ad94fe4b1ad3ff1f60406f69e6591300f302f965099c2d6176d0972ebfdec75e5c74985376f0180c57c0c3ffbcc3552750680d951c",
    "signer": "0xb788808d4CbaCCc0c39a9F386833260d834567DE",
    "userId": "981621250"
  }
}