{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377242874",
    "entityType": "User",
    "nonce": "0x8cf9b7e31fbb458974481fd47f47de33030914cd7e2343e6c18f5fdb719d3bb2",
    "signature": "0x1b7b0fafd0f26ab3a733ab9b4037b8adfc32a343233c8ce9cd2f0ed4cbbce6907e364faa2a67f8019bde37e8e923f4aa8685b97545a3526de14e176dae91fd981c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}