{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "971292289",
    "entityType": "User",
    "nonce": "0x5891fb8ef05cb831f2ea47072f21b12db784eb5cbbbff19e67398261b416a62d",
    "signature": "0x7fa70100e3537a362235b862c41adc4ca4b38238432e6566061293ee46e427672ed3972b7735b29d0c25861874fbe1adef324f4744318ba88b69a943acecdd5e1c",
    "signer": "0x5B83E7748cF8e414B76B16e39d629AA8deDB4616",
    "userId": "604013128"
  }
}