{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "407916583",
    "entityType": "User",
    "nonce": "0x9370b3c60f8460d2f25e87011e72c1e68046b008053cb1265d53627fa377a2fe",
    "signature": "0x4331767694aa93282443460d6291923694bb268ee366a2857a6282a3614477cb2b85de8f10bacd2d0b8ee68d1c6fca38c2df62ff2e75394a64d0f1ec1a7be2ea1c",
    "signer": "0xcF1BC458908F84936B19Ca8Cf67C751CD647B02b",
    "userId": "310796"
  }
}