{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388569291",
    "entityType": "User",
    "nonce": "0x23a6d968cac9e301e6e0112a96e682945b6575fad97eb92625a517d6b8b5e322",
    "signature": "0x60380087c24c706a44fcd8b0ca3c054520f3546d80c95ed352290bca946439185a6c05daf930afb286a8b992b17523dde4cd4b1b78a18fa5f435b3b34cd993b51c",
    "signer": "0x157D6bED7bB7A5D2bA4DDd2353158798F8744aC7",
    "userId": "587027717"
  }
}