{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3544",
    "entityType": "User",
    "nonce": "0x9a27e6e97eee24d1cfef191982e2620b39de237255945a887456b361f893085b",
    "signature": "0x733e6065f7e2776dc6bec7041f5c64734583c81e5bdceec457b2a9f74d7922d47b80f43be7491c228c73dd302dbb434358b39d473bc1d1722e360f38f8d66d771b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}