{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1625293",
    "entityType": "User",
    "nonce": "0xbac64d8439131b1f9c08e1ea2aedcab3fde4618c2560946e3d18ab8d70a03624",
    "signature": "0xe5b34f7d40a576468dfe78fbdef5daa469e39c7b94bd2eecfea57606aebd59f52b82018cabd5ebdb484cd6532555cc78c513af094cb5c49f0e1ddbfa6b8251c21c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}