{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871929900",
    "entityType": "User",
    "nonce": "0x83413376a61d9a2a42a0fa1ac8faac8e7b0828f85c1ac3ecb93e73e2e931c0db",
    "signature": "0x4dd4fb2b0362264da0fa6bcebef27252bf3d156dcd329afbc6e7dade63d4364447fba6c372844fb8895dad39e293e2d66af1113e688b30ace584a76d2592c6691b",
    "signer": "0x1481F49fD2f6524D8CDC0089b13bbd2e6E9106F4",
    "userId": "231243"
  }
}