{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x8e6a0c5e8c93775d1f70ac5591514a5e00bac7f5\"}",
    "nonce": "0x927b71d937c3261e1340b777817b62cdbbf30a07efbba26897dabca253eb3f64",
    "signature": "0x62322b7af2a87ddc6a9c81f65a8106989bd4ddec84e737776743b94f6603e42f4be438054199251766093e89f431272f77f9112d56ea890bece09f56e32c62641c",
    "signer": "0x8dd6E4ec37d1c29E8757920F9257c24c09bcB50c",
    "userId": "378820645"
  }
}