{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x6c1ef2e9c33e2ba1c0d352e41e06e8a3c7721c6f\"}",
    "nonce": "0x59517fa4866cabbb68b01b54d76d8d647b2a7486da5cd4ef838a5d9cdf7df924",
    "signature": "0xd1192758b3e799a38b0c43c6f2042e0e654750ad5957d550ac0324c4109316046c9caffdaa487e069606d8af68aa37e1fb691e365417830dbb5dfe962796510b1c",
    "signer": "0x674D4e1937962CE57Ed6baE3089b3227b29376e6",
    "userId": "629000885"
  }
}