{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53273933",
    "entityType": "User",
    "nonce": "0x5412dbb6f33d559ff8841cea801ad598318c58328bc7ae1bd3e56e618f24a35e",
    "signature": "0xf8b9986869c4c7cec3532587bd98ec1298d0413bebb24b5ccd624e4973adee2079705e2d0ebc34acdd340c058e65fbf96257690bb50e343c2f3cf9bc24b3d42c1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}