{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138597",
    "entityType": "User",
    "nonce": "0x78d138fbdc15ae9678dce447701f5efdac7f5ebfa88622baf33d80653b6ed143",
    "signature": "0x34f700991108316bff97c795848b269d1dc19a0c26ca3619c4bd6ee1fa7f80f142cd4f0171d9256dd8327a121b50b046cbf8073a3499a586bef215441e3ab4651c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}