{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64159186",
    "entityType": "User",
    "nonce": "0x04cad271bf19b9fefa8f85f112008df423305501da7141fedf2b2d647dfc840a",
    "signature": "0xea660ace544a289f239efa049c97798ca739f8b7fc9332e02fa2db05a49d950d5749d6de1d26f790c9c6b6b186dee9670b57f09ead4bb5e8446324ad6884a1d61b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}