{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x853358fff7d37491ffae514953bcc41d693f494a96bb6e3d30faadd617e44bb2",
    "signature": "0x53fc2057315315b7fb6b526c1774187fe1cbc18766df182c0363a7d96e92c2f115f5f9e1b8af627e98a8662fb2048fa868af661dc3a80e7717a11d370a6d30901c",
    "signer": "0xD5e21774eBFbb75367Fae64727C9FC7EB7C6820a",
    "userId": "58273052"
  }
}