{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x13868fd29a24e88981a4c2e7f49cf19ecc84609f\"}",
    "nonce": "0x7a03cf9f9960f222ac3d2adc25abacafbf4ef16ce38623bcc74b539d657989eb",
    "signature": "0xc3113bd94a68da378d9dafd7bd35a4cebf509ec6694549fd05ae550b3690069305bc9e72203c2eac9b4baa91af4fa0640116225f2c33fe5ed7344f29baacb6f11c",
    "signer": "0x1C35b2246f6ddA62BC7787B078d68F47cccDF848",
    "userId": "123465426"
  }
}