{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7afb653e2d88601c6f8d5d026a8a7b65766a6059a1ce04a976adc7a216357ad9",
    "signature": "0x4f9e5a6695db086d8339f9af667b08ef7c8a7a62a4a2ed5d00195e16f665100927d52cbff1ec57c12a6e1a81d1a90ac4ed8c4440272f4f3930df659a8a903a5f1c",
    "signer": "0x49c8368c064314c21EbfD798d8cc14C29035a34a",
    "userId": "720494104"
  }
}