{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5392",
    "entityType": "User",
    "nonce": "0x78dab942ac00c5fea3fadaccd303149ca275558601af2e5c98076710aa21fce4",
    "signature": "0x9c38b518aea38af1f3add677ec61a0b441d24524b9d67d7268a0e5b45afd50e41e66e0289116d02943610ec720c33c915eee37c44993acdd2b0fe238fa94b43f1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}