{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x512301b6340e502dd26673cbcee1c26e025b4bda\"}",
    "nonce": "0x3b07795653aff6d90428b474b4463acac303ee0781a56818382d6950aeebec7c",
    "signature": "0x6e5e22274ac1f166ffdb625109028f2434a7c7af9c23a9f2ab3a111dd960290e0a8d9a6eb656021b910da9ca16e61bb4b152ded06ea1865d1cc5ceaa291fb07e1c",
    "signer": "0x93559a113b033893A353E3Ad779fdc14C4b324CD",
    "userId": "819578939"
  }
}