{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319850",
    "entityType": "User",
    "nonce": "0x229de1c893501ce9654507427331209fbe4809e59db41b4294e0b9baf2fc2855",
    "signature": "0x90dd0fed3f4090d8779e8541829c97a70e9aaadd1bd54efdba19bf650788aef855ffff70b8af80580992f0e6f8fa7680655df66a6b58a925c8de9b9161d3463b1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}