{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3677a4947c0d70e9534f6a4a70a66cdac2589a97bdbd7a070601d13fd23185ef",
    "signature": "0x2d2cc47ba833a0da5372242e0ed7a4b56a5c2040109b12d02f953af9ea28f20a73d0b3bcdf07ec5fcddfe7c678f13a62a4c57f98313a5ccf20a7d5e0e49e5d901b",
    "signer": "0x3496A034C6077e38E7b33210De0C26dE7264Ee7C",
    "userId": "957494971"
  }
}