{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x554d1fff2a5d25b3cd71100358e8987a6cb43eaf2521adf855ba376cbeccc2ca",
    "signature": "0xee55f74f719bc1ec5afa4d149314034b3aaad06ee593f20043f6f896291634371f181c4dc09c054bb89042083ee45e603f751a0bababb73b783791b9cd36b0a71c",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}