{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "458118601",
    "entityType": "User",
    "nonce": "0xbf910c297a48566770878ea0f28265c38bc9d4becfd106135ce851c0f6da3e7e",
    "signature": "0x915263f5857a41e4abecbef295fcb5a231e3062b0a79d63d34ccef790a8ef4111c3ec69104299029b2da12bd2ac544802d138523ef442b95f023aedfa5e4c4311c",
    "signer": "0xF300c20BDBB459E009c4E55c08CFd33E12f8B0Cb",
    "userId": "782218508"
  }
}