{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7504",
    "entityType": "User",
    "nonce": "0x441c9ff66fac5fc18cd088c55da5fbc590f6f59ed46032bb2ab7898091e6d6f9",
    "signature": "0x4b88ec321fbcc277955061038440ff9156f95120058f0eb97e19cc89c2d2ec1d2417c7576d793a57523651770b6b6cdd7152f56dcf8e01c8731cde30f77c67a21c",
    "signer": "0x80005E1c5cb88Fd03a994eC8a06eFD4c801102D7",
    "userId": "225974748"
  }
}