{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "511280302",
    "entityType": "User",
    "nonce": "0xbb745e2a5f73f5c914d36de71d7f8a2d88df590179adfb99eee934b0faa35cd5",
    "signature": "0x09a6bfbe1fe4ea263f89cb04cb0b60432dafac2d9210817f9de64ecede3330ff644372d33adaf22f775c008dabb24ac41b5c4e5e546cf3b453979455917d7e1f1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}