{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x66bf2bb6ca5a54e1a535fb10cf8c96448bc7d3826ac8ddb6dbf267b9913776e6",
    "signature": "0x7e21476ff0659c48f68a6b591d37fdfb846e0adcad4f6eba6b19ebb7dc4597645198a5879817b916b0e3fa267d7489dfa631913ea48dee2aabbb2efa0d0c3cc91b",
    "signer": "0x4d339A20D5a4c5D5D695351f42635e3C98F58f0a",
    "userId": "179078771"
  }
}