{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144959",
    "entityType": "User",
    "nonce": "0xf5825ec9f2040ed4df493435d1fcf9caccc494aa7d92c6a09d083dc526191f94",
    "signature": "0xeca8d717fa26a0f186c1fda2ca723f3fd216cac7bf8223c70bcbf9c2c715cc01519d48879a466e7a03640fa36fe37f02a3f4aa6c3d43e3cd5f04de4c91bc65451c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}