{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "493030",
    "entityType": "User",
    "nonce": "0x3fc350513662b3125f161ca830e0fc4af4bad58d4f46cd64f827dfee8f5e4a1b",
    "signature": "0xaa494ecf659a6e4ba8336579a55bda4a7aa8bd9d1d101b1ad1f87ed49c995cb54a0b91ebdb12d59fb19a426ee3941b296125ddab4d044ba4c63725902d8335031c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}