{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "371339529",
    "entityType": "User",
    "nonce": "0xdbdcb76de5a0ac6ea43b89fa12097c2b288a23af21b5532cb13011f8a1cadea3",
    "signature": "0x3d7ba3db70583898f38b9f8cb1f0d1b843ffe291f797c76ff45b323589cc607d511c2b9c5192e83027f7f28b8d5d76d6a83a11b27a578d7c2bf0d8ee38377c701b",
    "signer": "0xF66719AC0E8463f8c9660B4412B4972e1dB48183",
    "userId": "57021"
  }
}