{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499031899",
    "entityType": "User",
    "nonce": "0x8780f5c7465c6191236dc3d884715624eb02269c509985c806a56da1efcd0594",
    "signature": "0x96757f51c842da8ab0d29848b085eca5e6ec96cde86b1a2b425d701dd6f78fcd79a202f4bae1e207f5dcb551bead7610c4b5a6b329fe678bf4f79d3344e437d71b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}