{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100391",
    "entityType": "User",
    "nonce": "0x6c7d2319d3e7a0c8ed8276d05eae7a0b4cd5f4572755f14863f00da5678d91e8",
    "signature": "0x16e224788f1e3dc1a23a49d328aecbc69c557b421b74c0455ab13fbd450c961f21af95b67e5594964cd4d1779f81fee7c917e75290e112d26080c19a9e2b20c91c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}