{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508076300",
    "entityType": "User",
    "nonce": "0x56b4f328face91e9bb60ff652be589d761795753dfe3b4e1ac93996753e6f8a0",
    "signature": "0x78f64c6efed4c5ab821f86bd8dc042ae742982fb4efa08af7b8023c2eebc24ad039855be4ac6d22ad49fc6d9dc898b05aef38cce6693ec8044cff2677b84c3bb1b",
    "signer": "0xA4a5081C88501f27b776C572c4b37e815E6c3A7D",
    "userId": "849530"
  }
}