{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x45da44ca80f80bb36edc80f7ce2e428c36e7547bd4e873cdc11f53101d40a77c",
    "signature": "0x60b9595b28808d8047f1539899dd8d090e18d3f73f9042f6d461d087fb1528915bd8908a7a94713834daa985d470b1da300249e525160f5efc8b00b539eadc831c",
    "signer": "0x4C413aA16AB0452da796Af095ae4D4C4B82F5f32",
    "userId": "44882442"
  }
}