{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354979",
    "entityType": "User",
    "nonce": "0xc99b7f196f2afe1536e83967ce0b80dd080996c77aef93d0113b3587a667ffad",
    "signature": "0x0f0063ba1b733bf2e06dcd390de3705c2debb18e247353224ccad05a8043e83a72c150e19cd71cdfe24300c37706b7537b484ddfff43a62091858c0af3958bd01b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}