{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa9ad4fd218bdf0554f9d03b7196af21dc3dfbfe8481f4ba7c31b903bd8541658",
    "signature": "0x7ffea7e409bfc46396d4b37fd51d45a318775ffc4dc24d67737a59b711151cb857249c0ac436aa5fc04907714fbd6c29b6735d6f48aae72a30149c2612d56fcb1b",
    "signer": "0x96631AE8EE332f8b0A00D0Ff2BCFBEb0092b5dfb",
    "userId": "256491722"
  }
}