{
  "manageEntity": {
    "action": "Approve",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xc54bbb0ccf422e3c66c9120fce31f9aa2596b016\",\"grantor_user_id\":166160724}",
    "nonce": "0xc8fb98e31e9e70801c26e8b409778afdc19fc14ccb144d76210c7999366cce9e",
    "signature": "0x3d2689532ce0487cd30ec52d29d7e0b121626471d32481b013f56a0d5dba72f42779c4576f4c6f3e173c4eaa4d764fab5fa13d89a640b38e114931d5c16843f51b",
    "signer": "0xc54BBB0cCf422e3c66C9120Fce31f9aA2596b016",
    "userId": "513483166"
  }
}