{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x245234b159c829803ea260f45c30cad31bb8900c\"}",
    "nonce": "0x8e241715552dcd6bdf14de3dcbeaf547d231148e97140aea78e63c1f47896174",
    "signature": "0xc795e35916fcdf4a170320688a05ed587d45556b08c96982f102e7b3b8a5a71d60b5988c6b6ff73c9b2b03eee753fa5d9c9a724689fc6b6fb30210c5fcb847df1b",
    "signer": "0x4086Dda2D91F77cd46De0859a4de37F888508faA",
    "userId": "568518925"
  }
}