{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x4c2adb8a805d7e9d4611767ba100c70febedc530\"}",
    "nonce": "0x3ca3931714313cee0acfa96bd8b2632a55f38d21ade41ec7b03d0feb2225e918",
    "signature": "0xf425e7e8e4d0361195cc536aaa8a5e7908779562bcdf3b80bbe4f4b64d742aa04c6e63a1203cf5c434a46be9b015d661a2dae0f6bbaa6bee4f08155ce8441ece1c",
    "signer": "0x4760a99eFF6e0AAAdbB76a89f32a78c2f0AaFBB4",
    "userId": "38448"
  }
}