{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xc037ce34cb12a8bce5e545700164b443c1a9000b\"}",
    "nonce": "0xa4b8ff9772bf73b0553e727d12fc044e42cfa2939aacc3b2ef5945adc8ef43e1",
    "signature": "0x932979f3145aa7786e61f7826d276a0e53432495b69e5ac8dd0092b614c8476921d9abc14ca628f89c75ec5557fa50bc9e88b6f12e5998bbf641a360e7013d011c",
    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}