{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xac0447f5608010af8e84241e0e4b908d991666d4ac68c8ba4e97e63e64c56e98",
    "signature": "0xa1307330a49ccb7d99c13efcacf532972acc691c9b80cebfde7e922890b068e93045aa5e56a45711a30fed44f7de75edbe4364d6bc6f914e36cff7ad802e6a901c",
    "signer": "0x3CE226b3CA677B312E9396cc48d4008c70545091",
    "userId": "550328673"
  }
}