{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "601",
    "entityType": "User",
    "nonce": "0xe8ef295e9a12faa909b0408e38ab6f75fee85ffd16b9affced2489c6de75f7c1",
    "signature": "0xb46c7538210f4e7751c3a043f68d285e3c62565685a09cfe5360531c4c2dd0c42af6004c4c617f5a34c89b868acd2e4607d2dc923eebfa9fa895f765d60cd6f81c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}