{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "443347253",
    "entityType": "User",
    "nonce": "0x9c3559e3470df93523aa25e769b9830b58d7d97c7d5ad7a0af69cd6658eb76ff",
    "signature": "0x7f03b6b9857b0c97afa6b2a4041a4b788aff5db6a23d035aa4b2316eca3eaa3251b2469e89061e419bec1cf70f4ab5f06421e53623e738170922bca11c63a7ac1c",
    "signer": "0x3973980Cb8cc085F60ce30eFF97C7838853aE5Fe",
    "userId": "410129285"
  }
}