{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2012591",
    "entityType": "User",
    "nonce": "0xe35a889c217a16f90a16191577de0d3b65800284f97f5eeec56855d0dd3b924d",
    "signature": "0x9135d96af5b8a0e6dc672e031c018977caa4280f65dea033ac844ec5f243d27520391b0ce65ea76ffb823758ae36d72821dba55965b7964bdc6a3e233481262f1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}