{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123483",
    "entityType": "User",
    "nonce": "0x6a8d038ed6708fa1d0accce4b8b90158f0b7f32a8aa9332157dd387bace78a64",
    "signature": "0x6432be86e0368a8c0c76ddbe963ea0b8bbd12520fd2ff655712efb86d0ce9df0061ce82b2402a0ef4d6cb42b474143013f533c2ab3fac0057acd2c1ac6f099cb1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}