{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18937",
    "entityType": "User",
    "nonce": "0x8ba84f97ae5bca67b68ec78cc6fff56bb07288250a72baa2e26c7b14d087f897",
    "signature": "0xd6227f8b6f768f303b27d84b76eec2c68bbf2202b0598d829e7234158541f10f74236a9605c0086cba9ae31a9914511ba677b4915f80ac89a9923fa5d3a4e99b1c",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}