{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "606017561",
    "entityType": "User",
    "nonce": "0x80574804d90cccfe8222b10bc239951d1657d63045ae580af8393822b2d98e28",
    "signature": "0xcaedd742afb8563e6144dae32b9e6002a6ef8b0d402e5c2d2903f894352bfa6a46d9d33eb61ffc030fe5530dd0f880caa6bffa184ff11d2644a1cff45ebb81091b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}