{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4d16a4da9ac7a696353280a0e02f0c2f1fb3f35992b030f5293ae862b0351b3f",
    "signature": "0xfd213a2b9afa8f19812753bb31e6cbda6fb7b49dd47619dc09e280519c35ebe80aee514944af140947aa394f151f48931d500150fc79fa5c32221659bf2264ec1c",
    "signer": "0x2D97e9F4E1Ba140f144D39dF3b296B00BDee6743",
    "userId": "542129667"
  }
}