{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x8741e6e4e5c393958e72c31d1be7345e841c43ef01e9e0f905ecd451a5b861c0",
    "signature": "0xf1eb5d9caa01506c550eb430ca9d97011d9363dde0407d360b3c081994948d505aa695ba1504890de7e03929cb2799bb4238bed63103acd1c028ad428bf912211b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}