{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x2cc593fc814461263d282a84286fd4f72c79562e\"}",
    "nonce": "0xe327b89c6e93eccfe5c52d33b5734369f888528dbebf82b3f4de084b337a631c",
    "signature": "0xcce4656f6ce338741e0def088c7e4d2dafb9cb3636208e5cd9f4627242e5e79a276dde49cfbd08f77ba6e578fca8bf886fee9408ef8f0a2c4f056dbf9659c4721b",
    "signer": "0x6990a23503cD8fBe95EB106101CD42Df22010036",
    "userId": "179431198"
  }
}