{
  "manageEntity": {
    "action": "Approve",
    "entityType": "Grant",
    "metadata": "{\"grantor_user_id\":2167}",
    "nonce": "0x49e3aba52fb2b555465f7912af71213e801a14083f4dacfff670d5d656d1e7cb",
    "signature": "0xa39a56d9efa0766764d10f45c12ebfaf732d54b1a53d7db57ac1037a4fe880c3196387df43cc4ccbe114105c6e3f378b8cc1c202e536f3a57e7a6971799ed54c1c",
    "signer": "0xc54BBB0cCf422e3c66C9120Fce31f9aA2596b016",
    "userId": "513483166"
  }
}