{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337546444",
    "entityType": "User",
    "nonce": "0x78df5ccb415b73dc003797522e7e945883b3de867b2e68148758eb689ae1a5e3",
    "signature": "0x6ebab4c073db66309716c4abdbc158271de0ef331759d5ef7a1eadc81a3665a148d70f87ab303e235d49150c7fe7ebbecc2658f6af87078cc3f5774d4acc49aa1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}