{
  "manageEntity": {
    "action": "Approve",
    "entityType": "Grant",
    "metadata": "{\"grantor_user_id\":693608897}",
    "nonce": "0x956e5df3bec4f40d7507bc0bbea4be531327408598ac722393ae67211f8252d5",
    "signature": "0xed2d424e3d4e6775e804fd49ca6dbbbc22c58d4f831390399a8d199dcd1b497a747be58a5e9dbd6b60d4c590847b4d2dfb0da106d107a69e54cbdb2f71c819581c",
    "signer": "0x6687B667182cfdc5646f5AEB14a9945c9b1d3A6B",
    "userId": "100"
  }
}