{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43899",
    "entityType": "User",
    "nonce": "0xcbe71c9d6e36d3706939762de1cc7c403725fe73bf5cb388156a3843cf541e17",
    "signature": "0x409413a2b700d82e17c9c6e54603467960f80ba177e05a3e16f02787ed7ebabd00e416b1ebf33e451dcdf1e49355f0dc9831940ea3e5758f8e68db75c1210be71b",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}