{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5607",
    "entityType": "User",
    "nonce": "0x819b71d769612c5e3270e2e17ceab63b342596e29228bcc305571eb74068b7e1",
    "signature": "0x2cd73687288d16fc0fd7d83ff780b2554f51002bd8a757501436d57f1db08da420b3a50dbf9da024984c059c93ddac8a2cb7a3e1e7b04d3b3b226f707b2316641b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}