{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x2cc593fc814461263d282a84286fd4f72c79562e\"}",
    "nonce": "0x1eb2c987a41030cb79d3dd6913ee8d6adbc4b162847f96c743eea4b538c312b3",
    "signature": "0x5790122b101997ca4d719433495107bd4e6960803f4234396d3da340dab5f5962b8f66c7b94ad7acf5fcfa95120d2b685e13b82a83a1d8f67a3a31c71356f2961c",
    "signer": "0x788d22f3c930928b1B1C930027389Db2c689d0be",
    "userId": "490842109"
  }
}