{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x599f96c4885ff01baea63cdd127c282c50e351fff15628def2894ec996ecab0f",
    "signature": "0xb2d63c4bdfc9b7a7b1d6752c3405fec755de7202279e69ba6e36fbde80d2ad046bd8fef948aabb8ab58e3bfc3d610463f301898524fc9d0d90477bfac3f19f631c",
    "signer": "0x4B31e50D7434DEfaaa0b24c5e862af503bACA6b9",
    "userId": "519913628"
  }
}