{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3571",
    "entityType": "User",
    "nonce": "0x7d76f7a1955c384bbfb4a43d3225eae964ab33b213f2793cd4cbe9edd95a61ec",
    "signature": "0x05f5074b8fda12ea29e0bb70a2e353f093c1549c56b60f60df5dd4c2f67487ae3d8e90a6a513dda1d8dde6535e9e330348c18862e993c67d4d0225ef83875b791c",
    "signer": "0xc0621be31c1D1B62b94F2d48eE34dD3c3dA9D57d",
    "userId": "161438318"
  }
}