{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x8e6a0c5e8c93775d1f70ac5591514a5e00bac7f5\"}",
    "nonce": "0xd0957da15946481829bbd4c68df4521a494f44eacd2fd218e3583d8b4169017c",
    "signature": "0x78517b8c36edbbd0385b0ecb337b2e428657c28ae19cb1038920049255a074b9131083d7924171d68875f8949baf114fc5b266f9aca4e9567660129821d3094c1c",
    "signer": "0xcc78da953cC4164eCFaD970348064B887F1AC18e",
    "userId": "440388441"
  }
}