{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "448011",
    "entityType": "User",
    "nonce": "0x37c0b3dbec0378c3366d5361304bf80f46c648aa25a966b9b7cbfd10629500e3",
    "signature": "0x3a5b72333ce5f76b6c2bf7bd4f96651687453f3213a5a076fb97bb760afba7d471f8ab73204d16939e3e82e95813e0011a34f8feca767820f98d86618016a64a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}