{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72570",
    "entityType": "User",
    "nonce": "0xa92936307c31a5891dd61a1efe395db794aa35efb242668b8d8c624650a6e766",
    "signature": "0x44f634641760857ac573f8105d57f062d1fd35ada170a1b9fc56216b27bef24c7497fa14e80223643bd10310b0a05aebcf81bc63e80e4e37b18de5f7e7ad7d741b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}