{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100928",
    "entityType": "User",
    "nonce": "0x975b709c9d73238ea1d8a4e0021fa9c5bd090a5346904a240cea11ed1e4123a7",
    "signature": "0x5929dfbeac04de8e869a1e177d8e042ab35622dcad47042189184d3b464bf20175140a96068dbfb23329a0c24e0b7238814b575b1a844e411092680ae701d8d01c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}