{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "223331",
    "entityType": "User",
    "nonce": "0xafb5797f0b7fb72833d42a64373cbfb7224654a5d4d90b4d92038612c5644106",
    "signature": "0x1050eadfb79682ab8eb293c4265aaf1bc5c3308879957a7fe9f566be8cbaa70e21f392cbf04f1ed51abdcdfee64ea9bacb07cc4c1c244686a06b34fc1131a2371b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}