{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa0223506d7029186bd9fcc92b34589bf7fcc85048953970e4519a9602b82b450",
    "signature": "0x26a816f0d5656fcdaf7e37e667f3a1f3e6fb0dfdf089b96029a70a0ee2a956fb195e440efc483f61750013cbcd1d43530b46b5cfba1453b460a18a670a3f95061c",
    "signer": "0xfbbb1226182dF79443F21FC56e05AB65B03d7B5A",
    "userId": "255561258"
  }
}