{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "71988",
    "entityType": "User",
    "nonce": "0x21e452075463fffc79e262643a5834e360295f61b9dbbdb3d5af20feb7c78e7f",
    "signature": "0xf43bb69ef6764f10a1238dea42948505d0707ee59744b49ec2d077a9756be8662d6b4a20843848569304b02c898ae66e390dfc651326fbfa33ffa43bb19e669d1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}