{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2521",
    "entityType": "User",
    "nonce": "0x0238cd06194407f527e1aee294c8eeba294e25d0e75070344547812a9e4aab90",
    "signature": "0x10d52a880980a89cfb277de298e7964b794aba0992581bce4ea4ef79250483eb6fcea0772f28f38fc98109c947541991bfe3bf13a923fe96ed63d118deef30741b",
    "signer": "0x5aeCC1AFF37a5BA2FEE40cF4dd6357A86DE23D42",
    "userId": "950958674"
  }
}