{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545790265",
    "entityType": "User",
    "nonce": "0x9e69beb4bbf7324c6a2a3425db2c2484822c458c09410e5e1f8392ab93e3fc1b",
    "signature": "0x0fd8904a92b4abab8b885c6df5ff2823319fc107ea487daacdb5e05c5cd1cf700f5876841dd7ed86f8a1b306f145a13bbfb5fda89ce3a8fb59ba4485ffb65d571c",
    "signer": "0xa68b28f9432CbB6F37Ba0358C055F536814BA1c3",
    "userId": "645866028"
  }
}