{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8caf59561c805ee95d7759a47c79000f57a9223fe1b4881bea40f98d8b1e2fbf",
    "signature": "0xea553e105b57305caf48fa2d1e01dcb1d756f2b78a3be119f6b7095b03b903035740fbd9be6f00e411df04203f6989a17fe632553e5f46ed2fb10440077a3a131c",
    "signer": "0x252D7E188Ff44498D1e2D41fFF532bFe1bdffa2c",
    "userId": "994701593"
  }
}