{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "380572",
    "entityType": "User",
    "nonce": "0x232c7b039b37bde886e204220415b4c4c22b91717beb5cd2017c977cf9334087",
    "signature": "0x25f556d999d49818dcbe84cc80fbc66248acb695e2238fcf0ee846e3b9b6a5fd5ca539a198131b09f8aa0fb2410951fc75a179010e57320f6475693cc054b7301c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}