{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x5b1bc6b15bfd49d3991ad6e84621e7f0fbf2a77e\"}",
    "nonce": "0x9575cea87b7da89426dfcfdb23f24eaa441c283e6de132b072e233a5c612deb3",
    "signature": "0x717cfae3d5b82767b740a12459d5418e17446e391f094867a30520f27fa504fc650482427c1bd19f440bf3f8799c8d5026fa8abe3938da4879ae6423018850381c",
    "signer": "0xc1b697a2129C7912d06285F9394b280Ae8Aab9B4",
    "userId": "416671686"
  }
}