{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3c2ed30f5388428299c3f582edde8dd79170e0dd4c1b8d69efabeea3dcf7a0a4",
    "signature": "0xeb82e2bb426dbd831aa20d24c303ef33bc9e772beb32315dffcbf36852eeff7a75741d0c4c6beca920b7cb1e96fd6f7b6e39bb193fad307d986443281f3c38a51b",
    "signer": "0x520d1f8F1D21c4cE69aec84A2516A94C22C62540",
    "userId": "453839357"
  }
}