{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd0c25bb750658048f103e6b5ea8ddef02f0fd4265757de6aaf5317dead88f461",
    "signature": "0xfd287e0912537207e6b4d7939ce4a61141782a92bd3dc2d05ff97f4e5e145d575bb051d627c97cd408f4aaa07ae802c5f63f01cc136e01ea03968c09e74ebc751c",
    "signer": "0x018fbC33CC778209B821C14f95CBe0C368E33bda",
    "userId": "603150527"
  }
}