{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308252159",
    "entityType": "User",
    "nonce": "0xe233a4229551f6430fd2de7aaccd69a3095e4ac6178a5b1b536af19d9839f55f",
    "signature": "0xdd3859794b3e9e1722981b00fe5b68f5efe02f9253f270826c7dd7785bbeb0db7e1254645f1a8dcc51ec5350db623f3cea329204d79bc15d91cfdb2a18a553411c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}