{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x53fccde96d9a7904bcdc2808abf522776b295cc693ce00488c387e9cd4ba8a18",
    "signature": "0x89687bd6daedd54b55a503a5f02b7b773e6e737107d48a6d9d361027bf85cf936bb41c6966a57cadddfed70088c069dd50aba362396a6d588dfa3b8dc63b08ab1b",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}