{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbf646e22c510dde2b1cc52a9424cfa3b3c7095ddfd4f03ed2ba8ab5ef818f78b",
    "signature": "0xafb53139d2a51f2d007dd71ffbda6b4ed797c2a10f0c53f9ec18c732af7c09691ce05790c5b46bd470c96a96bbf57f2b59a786ee50a9228b199034126cc0547d1b",
    "signer": "0xF3D339554B27eD7fC75fD237d83A8576f7068124",
    "userId": "341525072"
  }
}