{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0xd8c788c38ee39712d5f22f545229d11c36b2d6246755e113a98f6b6e189ddfa0",
    "signature": "0x0fc01efea530d11ce8a74b98798df7a3b121ee167e76885fea23ed38da4a1b8b5d374e32fa3dd6d4efb69e2ea75a2160ad2c80d7c154576ea9653d977f1279051b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}