{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "789943876",
    "entityType": "User",
    "nonce": "0xce0d390f64af2ffe82c060cfdbb04702b147599cf6e5d757ee1b8131ab224601",
    "signature": "0xec4127297775affc0211ce6ac1df848e85df496a4b0ef51658b6dc61747fac0b7dcb5642e78dc32b23481f58cfd06910e78699aa3e52989712c8be6f8dd17d4a1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}