{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618609289",
    "entityType": "User",
    "nonce": "0xeb1978f5fdb9deee41360e692c69339c54ad8f4164948cb8862a36a88a136d1b",
    "signature": "0xc93e3617cf4692ef712eb9aef436c51c6500c4eb1e6db8aa71b56104209cf9894b15d1a43ec595fade2ba9a334f495fc300de9bc14852646e4746105c32358961c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}