{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x01e78636d5653e77c5b5166a796184c8c6f8d90f9661c8d7f6b994be218f6082",
    "signature": "0x0994b45a7838fcf853dc8232cc2c59800432cda6ada39f2aec5d8cd36cd23aeb51ceb8a5a2b88cf95f8febbbd69aa7d074b6e305125c88fe012baac0906d96051c",
    "signer": "0x4FD7Cf7D634F5F26e577538A55E55eDF91665C01",
    "userId": "106462805"
  }
}