{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0fe22279928583efba24ec22610705000893031c5ae2269489cd1eb608a9e70c",
    "signature": "0x673124f85b59440b59e98dafe9b92c9db7588afebd98380f81d468ca502cd6b115d19076e1811b9065088a2514740e60dd0747a3c9f23b30055ea90714e107271b",
    "signer": "0x9E7FDEEcc2f0Db11e56CD39d424690bc6CD308B6",
    "userId": "223270106"
  }
}