{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x899b8ee670611da91925a8d26e45403b6abb93f46f7f8e2ecc3272d297ee08c3",
    "signature": "0x2913640663757362f415c9b8ef92816eb4f4a66db83a28427ac3645ea965a3f8794508545b5fa0599055d8863404fb4ea7c7e238667cf96f545f11f51e074abb1b",
    "signer": "0x9e3984E2a710de0afDF7C378F3dD189FD3e320Ea",
    "userId": "485780066"
  }
}