{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5339",
    "entityType": "User",
    "nonce": "0x263e8776aead340dbf3c10caa5ccd0b8230afa68a67ae9c6ea9795bd71cc7f83",
    "signature": "0xd6c1ce02d6d9078eb0884f7fb2d37abe6a30aaa0122097c781050aa3fe0504537d37bff4b419fc3c9cc892ca159375307178a5a18cb6d2aed8cf39f68c173c8d1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}