{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "405466",
    "entityType": "User",
    "nonce": "0x19a1d76dd4d3a1399cdefefdb1ddddb29c0729a70e42d11b7245b1186ab2527e",
    "signature": "0xa4208775d02359fce716ecd48a4b22082d2540d5f0a1bf5456d042af8862fa682e4b8c656bf11fb0f5814ce2b0d3284f5025412e3a0b370517204a13e00242441c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}