{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x5b1bc6b15bfd49d3991ad6e84621e7f0fbf2a77e\"}",
    "nonce": "0x346fc85e39e43998729144d37a504a19ed7e57d76aad5b0b5a39367e0eeb2467",
    "signature": "0xb9ec0732c09ca808858042bb64a69bdbb2a36fd0871efb2e10973adc50aaeb547f30b3e6abeca35b5f7c141d769fa682559def127f6e012f727e11fc8b4cc6921b",
    "signer": "0xEbf223E3bfE29c251Ee19f0d3515DDDA00B0Ad60",
    "userId": "2018345"
  }
}