{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330481",
    "entityType": "User",
    "nonce": "0xacb0fca2f75be5ac6a2bc930773cb7456c3f95ada82fe794c8db74cd803db115",
    "signature": "0xcc718dd99c4ce6e363a59ce4d8dde6a5b15e8f1a9821d33e6d686286926c6a4562c821f590b14960d53554ad08ddb839db0b52e99a3a3d5952f417f0221f2a301b",
    "signer": "0x195d9eE11400245E841C02c4b4288a90A8195e91",
    "userId": "103785872"
  }
}