{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf823fe19ea9a7906fbf350c33fb81d0ac09be85881c37f2694848c5a5c11935d",
    "signature": "0x1215b8a8e3d21f7e2852f673ac1a9e0606f6a32c94245f4c2cb726072bced3af274aa3a58ef4a7fe279c767581438d00cd38eeb3c91c3d73c30d638336ad203e1c",
    "signer": "0xA9f7cA90CB3E905CF35106aC13C4C7482C89F9f9",
    "userId": "330155528"
  }
}