{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xec3f57b11895ac897dfd0c0d5dac9bf3a84c5ab1b934a75a3f8a9e032817ffe1",
    "signature": "0x977224ff74d18184d22472896551aafe55fc1b465691e07cff1aed40c83f80fc055ce5dd1656dc0d1c54da545fb4c3f7b76213501e2d5779190257770fd8d1921b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}