{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "734664",
    "entityType": "User",
    "nonce": "0x8c2186c38279f3b64f5b0473813fb79cab0332f3fae58ec448a4b933dd0689cd",
    "signature": "0x6f9418a8497f2170c702e6fe7100fd3617664a2d323dabc845d3a808f728308d73dc191437adb24209dd46f937f12c13f6a0180164b02dbe3f7e9d01eb4d757b1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}