{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142500",
    "entityType": "User",
    "nonce": "0xa8fe146d5b91b138e182ce1a43007c5505335ba8e3005a4b84d0106986d1bd58",
    "signature": "0x218a31fd6a1416b0e0ea75707f9b9fa99198dd44375626e4e79d916640dda6322d105df93a369c1d629b433e4e9d9506e2f6c5b50561002e56a1678c9fcf870e1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}