{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1898138",
    "entityType": "User",
    "nonce": "0x85562cce00230b5b99853fe5d3ce289fb0cce4f4666cc3e42fba7a46b740baa4",
    "signature": "0x83ed7f7240317ba64eee4b4aa435001a4eae4f695135ab7ffbe732b07bc6bd6e43a4c91f2235fd2dc874b1905de6382065b705977cf0d81dca13306d36de22481c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}