{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "709003346",
    "entityType": "User",
    "nonce": "0x9e299e8d5b1b769b619f2171692bafff3537088f1d522042bf3d8d403d3b45e4",
    "signature": "0x403f0109bfb5f3b8720a4fc7c20cd6ec38940ed510391bec9b375c27f5c681ae3e40f5f290b0b2e8fd28f69206587e433ea2a6afb3401f50e5fddd5c6b9a49b21b",
    "signer": "0xe0f1d0Ca199D9bec117385Ce8D99EEF3b6CcB37c",
    "userId": "109379"
  }
}