{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15642",
    "entityType": "User",
    "nonce": "0x5fe764bc9ba8fc13c6109f0bad13c7f7a475cdd20a7f53d76f375e0ffeeca1b9",
    "signature": "0xd6ffbb99e3128e485ef65a390a7c3fd924e0d5f85204f8fa804f97ff6ebf1aa83618ad85de1d971904b0a888435da1ad220be069ca4ff5f80ae56d7a559f363c1b",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}