{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "746430200",
    "entityType": "User",
    "nonce": "0xf7c33259a0996e414515eead957b9328981351e066f7546dfbfdc5199da8c406",
    "signature": "0xa984e780ef9e6a5100f594a3a485cba056bbeac9a5b9c0328220c262d049d6ef087d428f45c819fbf1f966a63f9e7c681ebe684e7119df7385db5b47c3a248841c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}