{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6719d3bcfa86a616d2c7354b65dc6f1442405a258a7b29b022ece8d66b14c84f",
    "signature": "0x8cca6a26dfd015e1dd4f4c42c727489db0f99aee853f3137693be660f80539551bbb48ea5cc9916ff24ada1235cba952d2eb19322b26b82d0f18ea26f23ede8e1b",
    "signer": "0x96631AE8EE332f8b0A00D0Ff2BCFBEb0092b5dfb",
    "userId": "256491722"
  }
}