{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x04a8c73716e2057a2d68d55dde5955c145511ad54062e0a9cbbce52d1ee1ac88",
    "signature": "0x9c433a95fa111247279d2b0dea229f036b5ca57da26bfd2dbe07d6095843d10729a4aa58262e68d2ce724d3c61179bd4630ecedde56e2e853f534653264d3a251c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}