{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xe0525026f59d952ae2cda2f28771796c2d7f7d97\"}",
    "nonce": "0xf0e6973a8e466c22aa4be70865282436dc8565ecc6b8365734b03eaa8593ece5",
    "signature": "0x51c808ab881837215065fceba4e71655f631d408006b166709d2707b35923ba065c16a99db7c4f87546be77f6e18951f3136b78329762e00e5cc3c36941fd3ca1b",
    "signer": "0x62EEF0f9D6B799675A2d15CB1673c08eBa0Ff68D",
    "userId": "138609491"
  }
}