{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "864564824",
    "entityType": "User",
    "nonce": "0xded4d1efd4fed2556deb562a3b7e3cc18ada5236162aa940419ead1f27483f7a",
    "signature": "0x672e632369cbd08c6969e43ae3d926f8852ccb339e26b9aabf8d1a6c42a2af9458b3f8228a1464e84c440ca1722ef7a3bf8014237d944ffdeba46315dce262091c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}