{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xc53b3d1db49ff769804066f25b888bd357e834c4\"}",
    "nonce": "0xf033e614312ae12bba3057a87e7939413d3a4a962c3cd80868589bc01dd2548f",
    "signature": "0xdd1d5fc414eb91bb4ac6e8995ea61f9b4191348348f2088721a8a20a0b0353cb418e0685ef83bc4d2f03fb4acefafb7049dddf391fe4c086a3f74defef4f461f1c",
    "signer": "0x42ad36888200ADA907d907B61D48E2B24Cfa3Dae",
    "userId": "500178575"
  }
}