{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "820486414",
    "entityType": "User",
    "nonce": "0xfd7501e6363bffead244e41edb79ae1f82c91e446e0ef0d14b25e7dcb04952c8",
    "signature": "0xc60a59a16e90dc31dc4f585643305ca9ac3b91d2db1dbc4698f8c60ae8de6671283e7586a97d3b3da19ad93ab6ab4cf6c866d5500569f342765fdfab1ba45be91b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}