{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148054",
    "entityType": "User",
    "nonce": "0x7374adbcd254dab5489052f9ee71ae6ea9863fa9fb8e3237da8c6780700d0e9a",
    "signature": "0xd775eea560c3bdf86ce87dd828391e4e4f4359d7cc1c29499c290bab215fa9b962b6f203635d4be4df12ff160cfdfb44582d2aa3f5f3e05a04d24c5f1042c8b51c",
    "signer": "0x375963f281CEdF4D9D180496F80A256D574daBa2",
    "userId": "981824750"
  }
}