{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x118ce3590c33a716af1943fb0db2cb4feffe7be12f42e72770cfc214312df15d",
    "signature": "0x689bf96d40c3d7693b8f8cd4a20b88fc9206617162cbaf2bdda5b5c1f32d76946f425a9df0cefab17da19b03514ec4041bc46d858918f5c4438777d3e5d108941b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}