{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x43e766989e99a80ecf18bf165011e01fbfc3a676\"}",
    "nonce": "0xaaaa902962114dbfcf242154d4b0e89d9e95be7c8b0490f3cb30ee6a6c646138",
    "signature": "0x49269bad070ed97629d868bacb1320f1bb0550141c1e02570113b65dfb657cdb733d5914b182b09dd6e32699ad67fb7441610c77e2d65e42203f8152587ef4891b",
    "signer": "0xE929d5b0D27781f83f0b5A8e37b2652DBe76579B",
    "userId": "319129"
  }
}