{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xeb1b6bf9d9d49c353f84af43d8c06aff65ad99ff\"}",
    "nonce": "0x53b5df4937708298c3c6e03a9350d936901f42a3fa88b3cf3d9ddbf84ae4c25b",
    "signature": "0x146153c2583ad24f0e9b70f79f223df808084a9e1e0503850e4645d28c1a7ba25bccc1b9b61fd26109647f316c42b3161c72ea8b7fccf6b5eb990178caa930ca1c",
    "signer": "0xfD887Cca1aa33010930F493849cB4eb036a11f49",
    "userId": "516824957"
  }
}