{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849312402",
    "entityType": "User",
    "nonce": "0xf8be6914921be8f895cc0d9240ef46113c241b04a873e3d9bc06350cf8950d52",
    "signature": "0x2f7274750a77a0020c2c8517fa630001cc36c0c80fb93cc7a45fb8fea52af874075dbebfeb81b93cb3f883cd83b66baa6c4ead2a6510b1ac04afa9f7f305c3641c",
    "signer": "0xcc9cCc523005B394381478381D34DddB8558A28f",
    "userId": "957873025"
  }
}