{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2247",
    "entityType": "User",
    "nonce": "0x39b14e63afbc36287165f611a43d659ea6d4e1d4241817a4139278d1e8f774b5",
    "signature": "0xa51979573fc6c8a3e1833017cef98110d459c70a004d2884a62f43fbe8d9a0c32b4157b7be76f8b24bd0e4556bc563404f6af1678d946faddf8297c78e1118cd1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}