{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1510802",
    "entityType": "User",
    "nonce": "0x0428d2e19676399873d8a299e2139693eddf28e8bbcc44a33bf5678693479b57",
    "signature": "0xf8123015c2f4d0c7d98b86c0bacecf63c67e8fae9fbb08dbad14c31375b15f726973748df188e7bd03fc2116f3cfe4f04f501934d6567ab61caf94913c95c1271c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}