{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "274010868",
    "entityType": "User",
    "nonce": "0x969895ce24a25cd5c5f84c99de4141f18313e45a957357bd60538a43f4be22e8",
    "signature": "0x7af112d577bb7c450d21f7817a86db25b2ae3956790b2544d13950b4c8bff7621c9a2c6e9415a5a0992cf3c6653b6ed5be93d69144ed3c62a3eb6021d9a3452f1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}