{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748179517",
    "entityType": "User",
    "nonce": "0xf6a5ec0427c041c73aa2a8bcc36dc037397bad5caca10741ac8e172d3ef0727d",
    "signature": "0xd3cbe5f6c5078b0656ccd51a933dd5ce09736e39108d80c8c7c4c9b5ae7b1b0d2ba3b8086c3539055ca545bcfa6d581ca3953022fa481a6640a659bbe4e15e241b",
    "signer": "0x7c2f6C8E39514CA33Af557b55Ae76A43850B28f5",
    "userId": "317425703"
  }
}