{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x286e7ad8f9447d0112953bdb1684a4b4192ecb76\"}",
    "nonce": "0x22d66b7b7fd2b5b1bd8861092542f71931da98c90bd00385a5529a994e296cbc",
    "signature": "0x77abb1f90c2c3d327728ebff9cc58d2714cfdf155e4535372bd18c3936d8757a23c72ccd0399cd876b4db5cd3e040da0b1f722189b83823d93e277bd53c7deec1c",
    "signer": "0xEea0436BE070b3F58EED895666c6F144ACf21EF9",
    "userId": "154185462"
  }
}