{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x632ff4ef25448ac6d28c18e1a96b1ae732d82e58dca2581e8a621fec6d59d048",
    "signature": "0x7c1f90d98b0cf7f142532fdc801dc107bdcadfb1d1c213df21d5b1faa7c0c65d04ea6cf4306658bca38d0e0c48cb86bec83ee8c30fa858943c045ed6928ec8271b",
    "signer": "0xe56da5Fb5AAF30449E9e91827cc7A25B4EA876C0",
    "userId": "399987850"
  }
}