{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1645731",
    "entityType": "User",
    "nonce": "0xd0c04713a2ea63feca276e3d3b8cd7efad3d17f5f801c7f4c28281dc8da10097",
    "signature": "0xbd7645e34a8145b8989b080887412848c4b8daa021b433f6bf52ec91fc19cadb23e23ef7ca93d0edde02f05409cd56767ca7d13337dc91eefe5f5c59b0f0a2681c",
    "signer": "0xF54ACD9868e9906094BBEe9817413658a3Dd38A2",
    "userId": "399415777"
  }
}