{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x2cd8cee5af78b9a948697ee654cacd21c25f73b0\"}",
    "nonce": "0x71b2ddc0b1a5b6acc649f0864ee07434a921baf3354ac27ed7601338d79688f6",
    "signature": "0xbd15e0bfe585b6f867683eb9f2f3ec214b901873bc77bea11c8f17f8d9f387d76859b09b0ac36f93c9d5404636a6c6fb17143f73b4c62326dcd2c37f733355f61c",
    "signer": "0xB8CBa3Dd20819797F5ebc206b56BCb5E5C34eB34",
    "userId": "31229562"
  }
}