{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140",
    "entityType": "User",
    "nonce": "0xa23750284244e55c0727dcbc3332ebef1207e14b921a1ae4c94996555898a395",
    "signature": "0xb317b6ccf1478c9a18f58a9f870bae46a063315dae4b9bb32b4b048f988ea4fb2988c831bb1e353b8f5302812a66e1299a2a8f5f69317736043f481cba22a6871b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}