{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7ec02e7a45d9d0a69f6d63b1bb1f133ff7a35c468cb8a5c1b5f5e627d82ca181",
    "signature": "0xcf2af06c46e29baf4712d83249c0a26dd3855227c9dfcc3cc6a6df73221a6d3c630fcb772c086ae8bd912ab6fd43e9ed783bad3a7eaee2fdbcd13539f5250d241b",
    "signer": "0x11418bF0f89e9E71744d275CB6A34888cc3A769a",
    "userId": "904421219"
  }
}