{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x99a6649d35ed307f6f7c205488d3ecec2a88eb5c25e6f10fbe7e25d4de26474d",
    "signature": "0xe720b271246ef2433312c9725dcdd79eff43ea60597534765cd03d3b0ac119e96561c9994dcf8cb4c81d95b07b21d20f89d908cf512cea87ef59f4eb35b7e2531b",
    "signer": "0x88B27943F74D36094296911Dd903a353d2149590",
    "userId": "410246880"
  }
}