{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x8e6a0c5e8c93775d1f70ac5591514a5e00bac7f5\"}",
    "nonce": "0xae8cbff72151522c98e1bc35a0bf4245ba408adecc24d1f18fb306d41c443ba4",
    "signature": "0x433c1872235eb854f90e65716750956517a46014abe704479596e9a41058ae6047bda5d7c3dd2230d02f7855df46bfd30746c32fbafe6a59d4b2ab01e9c493e01c",
    "signer": "0x2f2dA55F7669d405740967bd92f584796d49dFCa",
    "userId": "991420781"
  }
}