{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x090bbc94e3ca70fb06552caabef06c7bb2a86059a18d55eb4767efe8eca9c801",
    "signature": "0x908ae6dcd325fb99edd1c51c362cb70ad040368589befb4a38c6ca351e655c641d3d759d38d3cec957f2c3e4a2c79957eea77266b96b19746004130540b8babd1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}