{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15135",
    "entityType": "User",
    "nonce": "0x537c40546530aaff4b2a6c9ae3b3ae201b77d383531ee45bd73318c15eb9af07",
    "signature": "0x9f5c2b17d38f0626577b89f8c4737e953373437f20ab3c5c356e380762691ab25ffdb82582e11e8d597cc504ae0c5a0cd11a4c82384004a6e770b36d5536bd0c1c",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}