{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "370513",
    "entityType": "User",
    "nonce": "0xe819cb59cd4f7dc7b37b0880ef62e0a754c75ca216cf9f074691bb9fe2d8de94",
    "signature": "0x7bf888600e31a4e7d0dcbac145b53aceb63c13f4929d200817820325bbd05c866e278adc8ea95f9bbaf96e9479437c9e7a3df6542c601c3f0874d0d20ee8579b1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}