{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x896438f22830005fcbdd368474d2b39f5a475f1ccf1f00aa15111d552a19d60e",
    "signature": "0x536ace0d88dd6d7498d7d33e5be10c6cdf7cd98049af02df5dc8f201efe9f49e5dcb27801775179e4f9bf40c72b4c428d289b675a270afc5a76836d1c5843d821c",
    "signer": "0x83822366045F722d96ad1f4f2F729F462dAb8cB3",
    "userId": "724314999"
  }
}