{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xef8e1318e1e2fb812c6621fee620d647c88ed279f4c7da64767a4a75df48cb00",
    "signature": "0xf2fb8e7d92be354cc5fe2c66de1f7e135d215f706b4e9e620ab340e44f66bd8614e8d788a69e4ee1b94cc1e3b38da376676ca51d5f069783ad5017cb209b016d1c",
    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}