{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "742907554",
    "entityType": "User",
    "nonce": "0x07d129f54a18295df20cdb9ec235ffb77d63961947ead6fc4dd262d847450e47",
    "signature": "0xdf3a7befb811f7632c89cf6ff5eb9728d5b7e6180050ebec4950c1c9529b2cfb02f382954bb6c0d2b717a10a1637fd8d6642380b87740c996a835791f93558b91c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}