{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "237778",
    "entityType": "User",
    "nonce": "0xa82290d33a24a36427cec6623e777533711409353c4e971d6f287918f458bd4f",
    "signature": "0xb9885b753ec594d65035afe2475c76feeb59b8ff11b2e41c281f60b6add3633c01029c58d0b48aab81804a18d7a26002bad8e7493f0f31111033f2a10b604f731b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}