{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "604604495",
    "entityType": "User",
    "nonce": "0xd56b609bd43a4cab98dd8b71aa5375d084841789cc0e45a295da082f70f4d39d",
    "signature": "0xfe72c2d880594fe63ba39208caf7e025abf18fa5d94b07e051cd1c3c27f5d989184544f67293362581aba6dbd28cc02af0755e4230282ad5aa1b23e668dd536d1b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}