{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfb25544df761dfe21a944253b2bc6693ec722569ad84f4022a47407ef0a6a0c9",
    "signature": "0x207e2fb55575dbe00b16a7e2d2f682662419ca5962f129ffa3c19dff68e66071624849836e2c0c3d251fdc9cbfd93d3de76cfb98ec4e578e6731d05f578a58021b",
    "signer": "0xd579c766A6f27d78864f48c58571E17A4D30C246",
    "userId": "44200326"
  }
}