{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xba2dee58ae85974b95c575c76c3b83d2e5453983affafcd9b232cf9680f32815",
    "signature": "0x2d99fff2c6aca2cc7ba48609a2e5c560c1ed3bdb25fc16b212928aa64d17e5c70e62c06cecc82e4916775e3f7b2c693568e81e1c4179506ca46375b3cdd775b21b",
    "signer": "0x7C8aaCD05285e30d402BFF67359FCC5d87133207",
    "userId": "621738482"
  }
}