{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf3a8a541e1ffe0ab9494de7c3a4729f9352404f1f46bb815ab1de1d3da3ce7ec",
    "signature": "0x31812717fe0fd916fe96f94125aae5992c54bf8dfd4a3b3b18532fd8b06a870b2036f506c246b88f7e2e1935f89766cd8f6a7792df5f06e17c7d914d2faffd461b",
    "signer": "0xD747540FDD48b0ADD908Fa54f06A2d2a5034d858",
    "userId": "725808521"
  }
}