{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xc037ce34cb12a8bce5e545700164b443c1a9000b\"}",
    "nonce": "0x42ef5d7c9e8f66aed16839aa8cded0b358bd5819a9c07acb97759699902c7815",
    "signature": "0x7a27efaacb5c3f7621c75bcdd7356bb3459ad6c5a66264e250dce94d81380eea625cc28823c7d2a05182aa64d840b401cdfec29bb442ab0b5d9fc42655ad46ff1c",
    "signer": "0x50052Cb40B021471Cb5889C1Ab69fA335871BE41",
    "userId": "331788639"
  }
}