{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x3138f082a098a0b3db2f143da522f938863cd5210ebb7a9d3c5612d10adbdb09",
    "signature": "0xf36c3af3aee239a4f087d09bc0ae1861c495e6191d53ae7a4920e280dd970bbb7f239545396a8dbcb36623c7f463f4b63b723a2a3639ca1fafdec5ae1b53ff641c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}