{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x615f713502e2d40c44da18e46881516b3e5eb4a38d35f9463bf0767d3bd95c33",
    "signature": "0xa6e8e93c7124675268a272d57d45250b8846001cff3e50d077981de008b6bd05734a14e59045a2d7d3abfd944ea9b82c7c13fe1e5906215961d12f7b40c6e14b1b",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}