{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "134891",
    "entityType": "User",
    "nonce": "0x931fc43475bb1e4dd6c120956bd37e7da9fc8dfc7a12d11c475554ac8d583242",
    "signature": "0xf7ea2b381ea52b33da0ca55be6e2ea31671b6a9f707fc2c3e47c5352580a284620aff022d7c0dc5e73aaecaa339d76d121171b4c119f787d150d2826cfd185161c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}