{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x699818a71bc9e0856073c49b1dc05b9c90cdd9771e9ff112e3553b2c51746130",
    "signature": "0xf7e05f331055123cfd170c08e1893a355b172556728a74770c11c4b3687a62e305b21b7c7eed7141c29d960940f38c6de39ffd288b2160fac0f02fc943c90b121b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}