{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17953",
    "entityType": "User",
    "nonce": "0x21de4de8653b5c9873658209e43642078bb5a613379ba8b6343b99414c3cf773",
    "signature": "0xe2282a2bba111f0dff9e987768e528cb05a032486d83c44d94a336ddc847a538427f429056f215eedeca3069beb1d323c28270977ac6ccb9cba2ce0f53cac4d41b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}