{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "314147",
    "entityType": "User",
    "nonce": "0x4454a40b8f7ce634f8698c634ddca6ee1da1870f204bb9b208c7236299d756a2",
    "signature": "0x3f326e65c6b833a4340c1ad5671df28c080d15c0de4f48560a91096a4c6870750cdc72d9619ce747cda90ae44526140f552a7f105e0290eaa0616a931ce3138d1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}