{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d5ba418ccb3829ea76250abb2293840cd7169603e2781aeee6471f829c3c1d6",
    "signature": "0x49408815cb60ad18d55f0a94e648cd2706f5ca38ff65200626a9b47d78c15a3f73514fc218c011b3e6d06072135765d2aa45c4982a0c7714c817ab1894cec4e71b",
    "signer": "0xEa9F45271C810281286B961944208Aa990206f89",
    "userId": "394371583"
  }
}