{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x79649a8787e6cb1b70dc62e66abf39517860954879faa6e3786364d020ef2257",
    "signature": "0xcd6d3d55801015348b58c80740523d0187a05b7e52d3783b605b9cef267e29922345764868a6112212b0eb4a492121268ba13dd5b4fe17672a182b10292f49991c",
    "signer": "0xe78f4db0d7A07c6560894af54fAac97902D8d04b",
    "userId": "406109114"
  }
}