{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1969a387627ff73da9fb2290aad88dfcf9a51704d0c84333f718b51da8662201",
    "signature": "0x5fe423c809ade85a5f006e0057f7d2cd7010f8290b359ede7cb286d749312c052036bdac7b21d5e68da241a632faed01b4ba8a5d034e59d2c6db353c5208b6791b",
    "signer": "0xEc934c3909F00A6d3a228eafb6cfAC236368E068",
    "userId": "839708037"
  }
}