{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x06c4866abf2be034942940766523deeeaa46b18ba6e835c62488105d44574c94",
    "signature": "0xd9e18940f29faa91099bb09f5e21064f704d2e3dc54948155ff1cacc4cf01fc05d1fab12aea81ee1f802a5c88a4a68f6370b7cf1ca1037b3542dc35654cbabaf1b",
    "signer": "0x005dde3128985d570cF86DFF14c62764E6E1facd",
    "userId": "688127416"
  }
}