{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381571423",
    "entityType": "User",
    "nonce": "0x39f0c71fe3b0c5f8b963cc600245c4f685b4de28ada7cb0ff3320a75680ca4eb",
    "signature": "0x31a0b4303af44308797c3bc1b610af888936060ee6023982b858c589c0973a3c4a8a270a5f0041e61f298a128ccc2c289c690f2dcc1f1602f0115a4f35c8df891b",
    "signer": "0x3c6Aa744893389cd4CBFa53fdEd080B463b6984B",
    "userId": "326811555"
  }
}