{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987235245",
    "entityType": "User",
    "nonce": "0xb585e6e44af25af0cbefd2ee232990b5cdf562ec9f19340a23c0b95ac8f0cf63",
    "signature": "0xf85b3c6d8445bbb6e187c6e58fd6ce7bbee24c23579f4ec120ff4403f687591b28a0a7a168f2f20f6f0f72895a8d4811df2bf561a42c8fd934e74d685f6417251b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}