{
  "manageEntity": {
    "action": "Approve",
    "entityType": "Grant",
    "metadata": "{\"grantor_user_id\":490473214}",
    "nonce": "0x6f2af8e75d98eceae9321b0819180941bf4a678d38ad909c4863ac9d8bf0d701",
    "signature": "0x50a593437b58f35fe60696ddfbcfcdbe91c0d0c2944c73ae513d9df8fd3fc72c13c7f9124b06ddca44b84a1aa5fd98b77606225a4d314dddfb76451c99446c6e1b",
    "signer": "0x4c2Adb8A805d7e9D4611767BA100c70FEbEDC530",
    "userId": "335638261"
  }
}