{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121616299",
    "entityType": "User",
    "nonce": "0x44d5437bca4c95b98d23c39e879a98e445d8972be1005322f5be37b15b2a2b95",
    "signature": "0x254ffc9c654b14af45a7ef7e8addb71b22d524a1419d16876d37e6023ae1ea93751cb8963d533fd87c997226318cc8500d60e55ce4118c8404ca99dabeaf4ae71c",
    "signer": "0x14FF2Ce3bf23AEeC9C140996251F6f85D8e99431",
    "userId": "53273933"
  }
}