{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309924236",
    "entityType": "User",
    "nonce": "0x7d7363834a625b3cd76040c3819ebf8cb8b7efece3f198df4192564561d6ce5a",
    "signature": "0x910faf7e512983c89d844088769456ccde582dbbe31983e943f835bb65aef4f41842152c35d5bdf7c17eb2b97449feeb523e417f010b8f98aacb918653e0539a1c",
    "signer": "0x8cD8d6e90b4da9619a96bb038622f6aF7AEa8720",
    "userId": "881004247"
  }
}