{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x5af61eb51745f433c6ccc3078dbb675c709a3ae7\"}",
    "nonce": "0xb0113c9c692d44eae64c6427a57eae7d5d3683e7d0e03a428a92bc20686bf363",
    "signature": "0xcecc284718aaa2508002c87c7747cbcf7ddb9d2673eadd6dc5368451c5338c7b55f8be714c0e4c6c2b556c319bc31cba3dfe0e3fae4e0715c3fcc60b3e9612b41c",
    "signer": "0x858Be7885D181415aF81b736714608bbff4936d2",
    "userId": "357460890"
  }
}