{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x899f01c37e1179a84b96884b50a211f6695d5644549defb8cabdaab8f01406ed",
    "signature": "0xdda1f1a4130973c1afa92251e878f7a164472d154b57fec5d187ff6fa1a6e1ca43b750c35c05475747cbbe948c72b3e2d10755f61e9876cbb802101f5efb06061c",
    "signer": "0x2C8Bde4793d71DD6747759CCdF448f4C7b08DB57",
    "userId": "373060873"
  }
}