{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "740994997",
    "entityType": "User",
    "nonce": "0x6867863b5ea801a0e31fe4fec48972c5582292ab0b31bb75cbf567364edbc602",
    "signature": "0x94af20954c30d6f3bc618693459d176e6b3c48d723cf42f105bd86d266c1e2380d6512cbec9f912c0589abf3242f0200445ab339ba27469fcc1866ac458acb671c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}